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as UNIX is a registered trademark by the Open Group. References to UNIX were left in where it made sense, like example outputs, and so forth. You can read the Trademark User Guide for "UNIX" at: http://www.unix.org/tmug2.ps or http://www.unix.org/tmug2.pdf git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@147067 c90b9560-bf6c-de11-be94-00142212c4b1
1394 lines
43 KiB
XML
1394 lines
43 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.114 $ -->
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<chapter id="configuration">
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<title>Runtime Configuration</title>
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<sect1 id="configuration.file">
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<title>The configuration file</title>
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<simpara>
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The configuration file (called <filename>php3.ini</filename> in
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PHP 3.0, and simply &php.ini; as of PHP 4.0)
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is read when PHP starts up. For the server module versions of PHP,
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this happens only once when the web server is started. For the
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<acronym>CGI</acronym> and <acronym>CLI</acronym> version, it happens on
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every invocation.
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</simpara>
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<para>
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The default location of &php.ini; is a compile time option (see the <link
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linkend="faq.installation.phpini">FAQ</link> entry), but can be changed
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for the <acronym>CGI</acronym> and <acronym>CLI</acronym> version with the
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<literal>-c</literal> command line switch, see the chapter about using
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<literal>PHP</literal> from the <link
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linkend="features.commandline">command line</link>. You can also use the
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environment variable <literal>PHPRC</literal> for an additional path to
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search for a &php.ini; file.
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</para>
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<note>
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<para>
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The Apache web server changes the directory to root at startup causing
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PHP to attempt to read &php.ini; from the root
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filesystem if it exists.
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</para>
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</note>
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<para>
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Not every PHP directive is documented below. For a list of all directives,
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please read your well commented &php.ini; file. You may want to view the
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latest <ulink url="&url.php.cvs.phpini;">php.ini here</ulink> from CVS.
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</para>
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<note>
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<para>
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The default value for the PHP directive
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<link linkend="ini.register-globals">register_globals</link> changed from
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<emphasis>on</emphasis> to <emphasis>off</emphasis> in PHP
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<ulink url="&url.php.release4.2.0;">4.2.0</ulink>.
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</para>
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</note>
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<para>
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<example>
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<title>&php.ini; example</title>
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<programlisting role="ini">
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<![CDATA[
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; any text on a line after an unquoted semicolon (;) is ignored
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[php] ; section markers (text within square brackets) are also ignored
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; Boolean values can be set to either:
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; true, on, yes
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; or false, off, no, none
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register_globals = off
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magic_quotes_gpc = yes
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; you can enclose strings in double-quotes
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include_path = ".:/usr/local/lib/php"
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; backslashes are treated the same as any other character
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include_path = ".;c:\php\lib"
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]]>
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</programlisting>
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<!-- TODO: add more details about values and expressions -->
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</example>
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</para>
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</sect1>
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<sect1 id="configuration.changes">
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<title>How to change configuration settings</title>
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<sect2 id="configuration.changes.apache">
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<title>Running <literal>PHP</literal> as Apache module</title>
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<simpara>
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When using PHP as an Apache module, you can also change the
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configuration settings using directives in Apache configuration
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files (e.g. &httpd.conf;) and
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&htaccess; files (You will need
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"AllowOverride Options" or "AllowOverride All" privileges)
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</simpara>
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<para>
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With PHP 4.0, there are several Apache directives that allow you
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to change the PHP configuration from within the Apache configuration
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files. For a listing of which directives are
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<constant>PHP_INI_ALL</constant>, <constant>PHP_INI_PERDIR</constant>,
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or <constant>PHP_INI_SYSTEM</constant>, have a look at the table
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found within the <function>ini_set</function> documentation.
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</para>
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<note>
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<simpara>
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With PHP 3.0, there are Apache directives that correspond to each
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configuration setting in the <filename>php3.ini</filename> name,
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except the name is prefixed by "php3_".
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</simpara>
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</note>
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<para>
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<variablelist>
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<varlistentry>
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<term>
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<systemitem role="directive">php_value</systemitem>
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<parameter>name</parameter>
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<parameter>value</parameter>
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</term>
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<listitem>
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<para>
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Sets the value of the specified directive.
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Can be used only with <constant>PHP_INI_ALL</constant> and <constant>PHP_INI_PERDIR</constant> type directives.
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To clear a previously set value use <literal>none</literal> as the value.
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</para>
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<note>
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<simpara>
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Don't use <literal>php_value</literal> to set boolean values.
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<literal>php_flag</literal> (see below) should be used instead.
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</simpara>
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</note>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<systemitem role="directive">php_flag</systemitem>
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<parameter>name</parameter>
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<parameter>on|off</parameter>
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</term>
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<listitem>
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<para>
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Used to set a Boolean configuration directive.
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Can be used only with <constant>PHP_INI_ALL</constant> and <constant>PHP_INI_PERDIR</constant> type directives.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<systemitem role="directive">php_admin_value</systemitem>
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<parameter>name</parameter>
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<parameter>value</parameter>
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</term>
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<listitem>
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<para>
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Sets the value of the specified directive.
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This can NOT be used in &htaccess; files.
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Any directive type set with <systemitem role="directive">php_admin_value</systemitem>
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can not be overridden by &htaccess; or virtualhost directives.
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To clear a previously set value use <literal>none</literal> as the value.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<systemitem role="directive">php_admin_flag</systemitem>
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<parameter>name</parameter>
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<parameter>on|off</parameter>
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</term>
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<listitem>
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<para>
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Used to set a Boolean configuration directive.
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This can NOT be used in &htaccess; files.
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Any directive type set with <systemitem role="directive">php_admin_flag</systemitem>
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can not be overridden by &htaccess; or virtualhost directives.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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<para>
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<example>
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<title>Apache configuration example</title>
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<programlisting role="ini">
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<![CDATA[
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<IfModule mod_php4.c>
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php_value include_path ".:/usr/local/lib/php"
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php_admin_flag safe_mode on
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</IfModule>
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<IfModule mod_php3.c>
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php3_include_path ".:/usr/local/lib/php"
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php3_safe_mode on
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</IfModule>
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]]>
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</programlisting>
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</example>
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</para>
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<caution>
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<para>
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PHP constants do not exist outside of PHP. For example, in
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&httpd.conf; you can not use PHP constants
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such as <constant>E_ALL</constant> or <constant>E_NOTICE</constant>
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to set the <link linkend="ini.error-reporting">error_reporting</link>
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directive as they will have no meaning and will evaluate to
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<emphasis>0</emphasis>. Use the associated bitmask values instead.
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These constants can be used in &php.ini;
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</para>
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</caution>
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</sect2>
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<sect2 id="configuration.changes.windows">
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<title>Changing <literal>PHP</literal> configuration via the Windows registry</title>
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<simpara>
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When running PHP on Windows, the configuration values can be
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modified on per-directory basis using the Windows registry. The
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configuration values are stored in the registry key
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<literal>HKLM\SOFTWARE\PHP\Per Directory Values</literal>,
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in the sub-keys corresponding to the path names. For example, configuration
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values for the directory <literal>c:\inetpub\wwwroot</literal> would
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be stored in the key <literal>HKLM\SOFTWARE\PHP\Per Directory
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Values\c\inetpub\wwwroot</literal>. The settings for the
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directory would be active for any script running from this
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directory or any subdirectory of it. The values under the key
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should have the name of <link linkend="configuration">PHP
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configuration directive</link> and the string value. PHP
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constants in the values would not be parsed.
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</simpara>
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</sect2>
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<sect2 id="configuration.changes.other">
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<title>Other interfaces to <literal>PHP</literal></title>
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<para>
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Regardless of the interface to <literal>PHP</literal> you can change
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certain values at runtime of your scripts through
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<function>ini_set</function>. The following table provides an overview
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at which level a directive can be set/changed.
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</para>
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<para>
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<table>
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<title>Definition of PHP_INI_* constants</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Constant</entry>
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<entry>Value</entry>
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<entry>Meaning</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>PHP_INI_USER</entry>
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<entry>1</entry>
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<entry>Entry can be set in user scripts</entry>
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</row>
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<row>
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<entry>PHP_INI_PERDIR</entry>
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<entry>2</entry>
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<entry>
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Entry can be set in &php.ini;, &htaccess; or
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&httpd.conf;
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</entry>
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</row>
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<row>
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<entry>PHP_INI_SYSTEM</entry>
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<entry>4</entry>
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<entry>
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Entry can be set in &php.ini; or &httpd.conf;
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</entry>
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</row>
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<row>
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<entry>PHP_INI_ALL</entry>
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<entry>7</entry>
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<entry>Entry can be set anywhere</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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<para>
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You can view the settings of the configuration values in
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the output of <function>phpinfo</function>. You can also
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access the values of individual configuration directives using
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<function>ini_get</function> or <function>get_cfg_var</function>.
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</para>
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</sect2>
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</sect1>
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<sect1 id="configuration.directives">
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<title>Miscellaneous configuration directives</title>
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<para>
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This is not a complete list of PHP directives. Directives are listed
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in their appropriate locations so for example information on session
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directives is located in the
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<link linkend="ref.session">sessions chapter</link>.
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</para>
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<sect2 id="ini.sect.httpd-options">
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<title>Httpd Options</title>
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<para>
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<table>
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<title>Httpd Options</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Name</entry>
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<entry>Default</entry>
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<entry>Changeable</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>async_send</entry>
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<entry>"0"</entry>
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<entry>PHP_INI_ALL</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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<para>
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</para>
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</sect2>
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<sect2 id="ini.sect.language-options">
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<title>Language Options</title>
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<para>
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<table>
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<title>Language and Misc Configuration Options</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Name</entry>
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<entry>Default</entry>
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<entry>Changeable</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>short_open_tag</entry>
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<entry>On</entry>
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<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
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</row>
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<row>
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<entry>asp_tags</entry>
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<entry>Off</entry>
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<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
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</row>
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<row>
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<entry>precision</entry>
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<entry>"14"</entry>
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<entry>PHP_INI_ALL</entry>
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</row>
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<row>
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<entry>y2k_compliance</entry>
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<entry>Off</entry>
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<entry>PHP_INI_ALL</entry>
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</row>
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<row>
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<entry>allow_call_time_pass_reference</entry>
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<entry>On</entry>
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<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
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</row>
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<row>
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<entry>expose_php</entry>
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<entry>On</entry>
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<entry>PHP_INI_SYSTEM</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</para>
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&ini.descriptions.title;
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<para>
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<variablelist>
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<varlistentry id="ini.short-open-tag">
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<term>
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<parameter>short_open_tag</parameter>
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<type>boolean</type>
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</term>
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<listitem>
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<para>
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Tells whether the short form (<userinput><? ?></userinput>)
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of PHP's open tag should be allowed. If you want to use PHP in
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combination with XML, you can disable this option in order to
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use <userinput><?xml ?></userinput> inline. Otherwise, you
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can print it with PHP, for example: <userinput><?php echo '<?xml
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version="1.0"'; ?></userinput>. Also if disabled, you must use the
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long form of the PHP open tag (<userinput><?php ?></userinput>).
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</para>
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<note>
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<para>
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This directive also affects the shorthand <userinput><?=</userinput>,
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which is identical to <userinput><? echo</userinput>. Use of this
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shortcut requires <systemitem role="directive">short_open_tag</systemitem>
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to be on.
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</para>
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</note>
|
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</listitem>
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</varlistentry>
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|
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<varlistentry id="ini.asp-tags">
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<term>
|
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<parameter>asp_tags</parameter>
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<type>boolean</type>
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</term>
|
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<listitem>
|
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<simpara>
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Enables the use of ASP-like <% %> tags in addition to
|
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the usual <?php ?> tags. This includes the
|
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variable-value printing shorthand of <%= $value %>. For
|
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more information, see <link
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linkend="language.basic-syntax.phpmode">Escaping from HTML</link>.
|
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</simpara>
|
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<note>
|
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<para>
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Support for ASP-style tags was added in 3.0.4.
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</para>
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</note>
|
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</listitem>
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</varlistentry>
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|
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<varlistentry id="ini.precision">
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<term>
|
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<parameter>precision</parameter>
|
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<type>integer</type>
|
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</term>
|
|
<listitem>
|
|
<simpara>
|
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The number of significant digits displayed in floating point numbers.
|
|
</simpara>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.y2k-compliance">
|
|
<term>
|
|
<parameter>y2k_compliance</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<simpara>
|
|
Enforce year 2000 compliance (will cause problems with non-compliant browsers)
|
|
</simpara>
|
|
</listitem>
|
|
</varlistentry>
|
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|
|
|
|
<varlistentry id="ini.allow-call-time-pass-reference">
|
|
<term>
|
|
<parameter>allow_call_time_pass_reference</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Whether to enable the ability to force arguments to be passed by reference
|
|
at function call time. This method is deprecated and is likely to be
|
|
unsupported in future versions of PHP/Zend. The encouraged method of
|
|
specifying which arguments should be passed by reference is in the function
|
|
declaration. You're encouraged to try and turn this option Off and make
|
|
sure your scripts work properly with it in order to ensure they will work
|
|
with future versions of the language (you will receive a warning each time
|
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you use this feature, and the argument will be passed by value instead of by
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reference).
|
|
</para>
|
|
<para>
|
|
See also <link linkend="language.references">References Explained</link>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.expose-php">
|
|
<term>
|
|
<parameter>expose_php</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Decides whether PHP may expose the fact that it is installed on the server
|
|
(e.g. by adding its signature to the Web server header). It is no security
|
|
threat in any way, but it makes it possible to determine whether you use PHP
|
|
on your server or not.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sect.resource-limits">
|
|
<title>Resource Limits</title>
|
|
<para>
|
|
<table>
|
|
<title>Resource Limits</title>
|
|
<tgroup cols="3">
|
|
<thead>
|
|
<row>
|
|
<entry>Name</entry>
|
|
<entry>Default</entry>
|
|
<entry>Changeable</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>memory_limit</entry>
|
|
<entry>"8M"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</para>
|
|
|
|
&ini.descriptions.title;
|
|
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry id="ini.memory-limit">
|
|
<term>
|
|
<parameter>memory_limit</parameter>
|
|
<type>integer</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
This sets the maximum amount of memory in bytes that a script
|
|
is allowed to allocate. This helps prevent poorly written
|
|
scripts for eating up all available memory on a server. In order to
|
|
use this directive you must have enabled it at compile time. So,
|
|
your configure line would have included:
|
|
<literal>--enable-memory-limit</literal>. Note that you have to set
|
|
it to -1 if you don't want any limit for your memory.
|
|
</para>
|
|
<para>
|
|
As of PHP 4.3.2, and when memory_limit is enabled, the PHP function
|
|
<function>memory_get_usage</function> is made available.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
<para>
|
|
See also: <link linkend="ini.max-execution-time">max_execution_time</link>.
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sect.data-handling">
|
|
<title>Data Handling</title>
|
|
<para>
|
|
<table>
|
|
<title>Data Handling Configuration Options</title>
|
|
<tgroup cols="3">
|
|
<thead>
|
|
<row>
|
|
<entry>Name</entry>
|
|
<entry>Default</entry>
|
|
<entry>Changeable</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>track-vars</entry>
|
|
<entry>"On"</entry>
|
|
<entry>PHP_INI_??</entry>
|
|
</row>
|
|
<row>
|
|
<entry>arg_separator.output</entry>
|
|
<entry>"&"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>arg_separator.input</entry>
|
|
<entry>"&"</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
<row>
|
|
<entry>variables_order</entry>
|
|
<entry>"EGPCS"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>register_globals</entry>
|
|
<entry>"Off"</entry>
|
|
<entry>PHP_INI_PERDIR|PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>register_argc_argv</entry>
|
|
<entry>"On"</entry>
|
|
<entry>PHP_INI_PERDIR|PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>register_long_arrays</entry>
|
|
<entry>"On"</entry>
|
|
<entry>PHP_INI_PERDIR|PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>post_max_size</entry>
|
|
<entry>"8M"</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
<row>
|
|
<entry>gpc_order</entry>
|
|
<entry>"GPC"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>auto_prepend_file</entry>
|
|
<entry>""</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
<row>
|
|
<entry>auto_append_file</entry>
|
|
<entry>""</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
<row>
|
|
<entry>default_mimetype</entry>
|
|
<entry>"text/html"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>default_charset</entry>
|
|
<entry>"iso-8859-1"</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>always_populate_raw_post_data</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
<row>
|
|
<entry>allow_webdav_methods</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</para>
|
|
|
|
&ini.descriptions.title;
|
|
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry id="ini.track-vars">
|
|
<term>
|
|
<parameter>track_vars</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
If enabled, then Environment, GET, POST, Cookie, and Server
|
|
variables can be found in the global associative arrays
|
|
<varname>$_ENV</varname>,
|
|
<varname>$_GET</varname>,
|
|
<varname>$_POST</varname>,
|
|
<varname>$_COOKIE</varname>, and
|
|
<varname>$_SERVER</varname>.
|
|
</para>
|
|
<para>
|
|
Note that as of PHP 4.0.3, <systemitem
|
|
role="directive">track_vars</systemitem> is always turned on.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.arg-separator.output">
|
|
<term>
|
|
<parameter>arg_separator.output</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The separator used in PHP generated URLs to separate arguments.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.arg-separator.input">
|
|
<term>
|
|
<parameter>arg_separator.input</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
List of separator(s) used by PHP to parse input URLs into variables.
|
|
</para>
|
|
<note>
|
|
<para>
|
|
Every character in this directive is considered as separator!
|
|
</para>
|
|
</note>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.variables-order">
|
|
<term>
|
|
<parameter>variables_order</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Set the order of the EGPCS (Environment, GET, POST, Cookie,
|
|
Server) variable parsing. The default setting of this
|
|
directive is "EGPCS". Setting this to "GP", for example,
|
|
will cause PHP to completely ignore environment variables,
|
|
cookies and server variables, and to overwrite any GET
|
|
method variables with POST-method variables of the same name.
|
|
</para>
|
|
<para>
|
|
See also <link linkend="ini.register-globals">register_globals</link>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.register-globals">
|
|
<term>
|
|
<parameter>register_globals</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Tells whether or not to register the EGPCS (Environment, GET,
|
|
POST, Cookie, Server) variables as global variables. For example;
|
|
if register_globals = on, the url
|
|
<literal>http://www.example.com/test.php?id=3</literal> will produce
|
|
<varname>$id</varname>. Or, <varname>$DOCUMENT_ROOT</varname> from
|
|
<varname>$_SERVER['DOCUMENT_ROOT']</varname>. You may want to turn
|
|
this off if you don't want to clutter your scripts' global scope with
|
|
user data. As of PHP <ulink url="&url.php.release4.2.0;">4.2.0</ulink>,
|
|
this directive defaults to <emphasis>off</emphasis>. It's preferred to
|
|
go through PHP <link linkend="reserved.variables">Predefined Variables
|
|
</link> instead, such as the
|
|
<link linkend="language.variables.superglobals">superglobals</link>:
|
|
<varname>$_ENV</varname>, <varname>$_GET</varname>,
|
|
<varname>$_POST</varname>, <varname>$_COOKIE</varname>, and
|
|
<varname>$_SERVER</varname>. Please read the security chapter on
|
|
<link linkend="security.registerglobals">Using register_globals</link>
|
|
for related information.
|
|
</para>
|
|
<para>
|
|
Please note that <systemitem role="directive">register_globals</systemitem>
|
|
cannot be set at runtime (<function>ini_set</function>). Although, you can
|
|
use &htaccess; if your host allows it as described
|
|
above. An example &htaccess; entry:
|
|
<userinput>php_flag register_globals on</userinput>.
|
|
</para>
|
|
<note>
|
|
<para>
|
|
<systemitem role="directive">register_globals</systemitem> is affected
|
|
by the <link linkend="ini.variables-order">variables_order</link>
|
|
directive.
|
|
</para>
|
|
</note>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.register-argc-argv">
|
|
<term>
|
|
<parameter>register_argc_argv</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<simpara>
|
|
Tells PHP whether to declare the argv & argc variables
|
|
(that would contain the GET information).
|
|
</simpara>
|
|
<simpara>
|
|
See also <link linkend="features.commandline">command line</link>.
|
|
Also, this directive became available in PHP 4.0.0 and
|
|
was always "on" before that.
|
|
</simpara>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.register-long-arrays">
|
|
<term>
|
|
<parameter>register_long_arrays</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<simpara>
|
|
Tells PHP whether or not to register the deprecated long
|
|
<varname>$HTTP_*_VARS</varname> type
|
|
<link linkend="language.variables.predefined">predefined
|
|
variables</link>. When On (default), long predefined PHP
|
|
variables like <varname>$HTTP_GET_VARS</varname> will be defined.
|
|
If you're not using them, it's recommended to turn them off,
|
|
for performance reasons. Instead, use the superglobal arrays,
|
|
like <varname>$_GET</varname>.
|
|
</simpara>
|
|
<simpara>
|
|
This directive became available in PHP 5.0.0.
|
|
</simpara>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.post-max-size">
|
|
<term>
|
|
<parameter>post_max_size</parameter>
|
|
<type>integer</type>
|
|
</term>
|
|
<listitem>
|
|
<simpara>
|
|
Sets max size of post data allowed. This setting also affects
|
|
file upload. To upload large files, this value must be larger
|
|
than <link linkend="ini.upload-max-filesize">upload_max_filesize</link>.
|
|
</simpara>
|
|
<simpara>
|
|
If memory limit is enabled by your configure script, <link
|
|
linkend="ini.memory-limit">memory_limit</link> also affects
|
|
file uploading. Generally speaking,
|
|
<link linkend="ini.memory-limit">memory_limit</link> should be
|
|
larger than <parameter>post_max_size</parameter>.
|
|
</simpara>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.gpc-order">
|
|
<term>
|
|
<parameter>gpc_order</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Set the order of GET/POST/COOKIE variable parsing. The
|
|
default setting of this directive is "GPC". Setting this to
|
|
"GP", for example, will cause PHP to completely ignore cookies
|
|
and to overwrite any GET method variables with POST-method
|
|
variables of the same name.
|
|
</para>
|
|
<note>
|
|
<para>
|
|
This option is not available in PHP 4.
|
|
Use <link linkend="ini.variables-order">variables_order</link>
|
|
instead.
|
|
</para>
|
|
</note>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.auto-prepend-file">
|
|
<term>
|
|
<parameter>auto_prepend_file</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the name of a file that is automatically parsed
|
|
before the main file. The file is included as if it was
|
|
called with the <function>include</function> function, so
|
|
<link linkend="ini.include-path">include_path</link> is used.</para>
|
|
<para>
|
|
The special value <systemitem class="constant">none</systemitem>
|
|
disables auto-prepending.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.auto-append-file">
|
|
<term>
|
|
<parameter>auto_append_file</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the name of a file that is automatically parsed
|
|
after the main file. The file is included as if it was
|
|
called with the <function>include</function> function, so
|
|
<link linkend="ini.include-path">include_path</link> is used.</para>
|
|
<para>
|
|
The special value <systemitem class="constant">none</systemitem>
|
|
disables auto-appending.
|
|
<note>
|
|
<simpara>
|
|
If the script is terminated with <function>exit</function>,
|
|
auto-append will <emphasis>not</emphasis> occur.</simpara>
|
|
</note>
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.default-mimetype">
|
|
<term>
|
|
<parameter>default_mimetype</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.default-charset">
|
|
<term>
|
|
<parameter>default_charset</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
As of 4.0b4, PHP always outputs a character encoding by default in
|
|
the Content-type: header. To disable sending of the charset, simply
|
|
set it to be empty.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.always-populate-raw-post-data">
|
|
<term>
|
|
<parameter>always_populate_raw_post_data</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Always populate the $HTTP_RAW_POST_DATA variable.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.allow-webdav-methods">
|
|
<term>
|
|
<parameter>allow_webdav_methods</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Allow handling of WebDAV http requests within PHP scripts (eg.
|
|
PROPFIND, PROPPATCH, MOVE, COPY, etc..)
|
|
If you want to get the post data of those requests, you have to
|
|
set <link linkend="ini.always-populate-raw-post-data">
|
|
always_populate_raw_post_data</link> as well.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
<para>
|
|
See also: <link linkend="ini.magic-quotes-gpc">magic_quotes_gpc</link>,
|
|
<link linkend="ini.magic-quotes-runtime">magic-quotes-runtime</link>,
|
|
and
|
|
<link linkend="ini.magic-quotes-sybase">magic_quotes_sybase</link>.
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sect.path-directory">
|
|
<title>Paths and Directories</title>
|
|
<para>
|
|
<table>
|
|
<title>Paths and Directories Configuration Options</title>
|
|
<tgroup cols="3">
|
|
<thead>
|
|
<row>
|
|
<entry>Name</entry>
|
|
<entry>Default</entry>
|
|
<entry>Changeable</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>include_path</entry>
|
|
<entry>PHP_INCLUDE_PATH</entry>
|
|
<entry>PHP_INI_ALL</entry>
|
|
</row>
|
|
<row>
|
|
<entry>doc_root</entry>
|
|
<entry>PHP_INCLUDE_PATH</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>user_dir</entry>
|
|
<entry>NULL</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>extension_dir</entry>
|
|
<entry>PHP_EXTENSION_DIR</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>cgi.fix_pathinfo</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>cgi.force_redirect</entry>
|
|
<entry>"1"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>cgi.redirect_status_env</entry>
|
|
<entry>""</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>fastcgi.impersonate</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>cgi.rfc2616_headers</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</para>
|
|
|
|
&ini.descriptions.title;
|
|
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry id="ini.include-path">
|
|
<term>
|
|
<parameter>include_path</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a list of directories where the
|
|
<function>require</function>, <function>include</function>
|
|
and <function>fopen_with_path</function> functions look for
|
|
files. The format is like the system's <envar>PATH</envar>
|
|
environment variable: a list of directories separated with a
|
|
colon in Unix or semicolon in Windows.
|
|
</para>
|
|
<para>
|
|
<example>
|
|
<title>Unix include_path</title>
|
|
<programlisting role="php.ini">
|
|
<![CDATA[
|
|
include_path=".:/php/includes"
|
|
]]>
|
|
</programlisting>
|
|
</example>
|
|
</para>
|
|
<para>
|
|
<example>
|
|
<title>Windows include_path</title>
|
|
<programlisting role="php.ini">
|
|
<![CDATA[
|
|
include_path=".;c:\php\includes"
|
|
]]>
|
|
</programlisting>
|
|
</example>
|
|
</para>
|
|
<para>
|
|
Using a <literal>.</literal> in the include path allows for
|
|
relative includes as it means the current directory.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.doc-root">
|
|
<term>
|
|
<parameter>doc_root</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
PHP's "root directory" on the server. Only used if
|
|
non-empty. If PHP is configured with &safemode;, no files outside
|
|
this directory are served.
|
|
If PHP was not compiled with FORCE_REDIRECT, you SHOULD set doc_root
|
|
if you are running PHP as a CGI under any web server (other than IIS)
|
|
The alternative is to use the <link linkend="ini.cgi.force-redirect">
|
|
cgi.force_redirect</link> configuration below.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.user-dir">
|
|
<term>
|
|
<parameter>user_dir</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The base name of the directory used on a user's home
|
|
directory for <literal>PHP</literal> files, for example
|
|
<literal>public_html</literal>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.extension-dir">
|
|
<term>
|
|
<parameter>extension_dir</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
In what directory PHP should look for dynamically loadable
|
|
extensions. See also: <link linkend="ini.enable-dl">enable_dl</link>,
|
|
and <function>dl</function>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.extension">
|
|
<term>
|
|
<parameter>extension</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Which dynamically loadable extensions to load when PHP starts
|
|
up.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.cgi.fix_pathinfo">
|
|
<term>
|
|
<parameter>cgi.fix_pathinfo</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Provides <emphasis>real</emphasis> PATH_INFO/PATH_TRANSLATED
|
|
support for CGI. PHP's previous behaviour was to set
|
|
PATH_TRANSLATED to SCRIPT_FILENAME, and to not grok what PATH_INFO
|
|
is. For more information on PATH_INFO, see the cgi specs. Setting
|
|
this to 1 will cause PHP CGI to fix it's paths to conform to the
|
|
spec. A setting of zero causes PHP to behave as before. Default
|
|
is zero. You should fix your scripts to use SCRIPT_FILENAME rather
|
|
than PATH_TRANSLATED.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.cgi.force-redirect">
|
|
<term>
|
|
<parameter>cgi.force_redirect</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
cgi.force_redirect is necessary to provide security running PHP as a
|
|
CGI under most web servers. Left undefined, PHP turns this on by
|
|
default. You can turn it off <emphasis>AT YOUR OWN RISK</emphasis>.
|
|
</para>
|
|
<note>
|
|
<para>
|
|
Windows Users: You CAN safely turn this off for IIS, in fact, you MUST.
|
|
To get OmniHTTPD or Xitami to work you MUST turn it off.
|
|
</para>
|
|
</note>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.cgi.redirect-status-env">
|
|
<term>
|
|
<parameter>cgi.redirect_status_env</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
If cgi.force_redirect is turned on, and you are not running under
|
|
Apache or Netscape (iPlanet) web servers, you MAY need to set an
|
|
environment variable name that PHP will look for to know it is OK
|
|
to continue execution.
|
|
</para>
|
|
<note>
|
|
<para>
|
|
Setting this variable MAY cause security issues,
|
|
KNOW WHAT YOU ARE DOING FIRST.
|
|
</para>
|
|
</note>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.fastcgi.impersonate">
|
|
<term>
|
|
<parameter>fastcgi.impersonate</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
FastCGI under IIS (on WINNT based OS) supports the ability to impersonate
|
|
security tokens of the calling client. This allows IIS to define the
|
|
security context that the request runs under. mod_fastcgi under Apache
|
|
does not currently support this feature (03/17/2002)
|
|
Set to 1 if running under IIS. Default is zero.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.cgi.rfc2616-headers">
|
|
<term>
|
|
<parameter>cgi.rfc2616_headers</parameter>
|
|
<type>int</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Tells PHP what type of headers to use when sending HTTP response
|
|
code. If it's set 0, PHP sends a Status: header that is supported
|
|
by Apache and other web servers. When this option is set to 1, PHP
|
|
will send <ulink url="&url.rfc;2616">RFC 2616</ulink> compliant
|
|
headers. Leave it set to 0 unless you know what you're doing.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sect.file_uploads">
|
|
<title>File Uploads</title>
|
|
<para>
|
|
<table>
|
|
<title>File Uploads Configuration Options</title>
|
|
<tgroup cols="3">
|
|
<thead>
|
|
<row>
|
|
<entry>Name</entry>
|
|
<entry>Default</entry>
|
|
<entry>Changeable</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>file_uploads</entry>
|
|
<entry>"1"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>upload_tmp_dir</entry>
|
|
<entry>NULL</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
<row>
|
|
<entry>upload_max_filesize</entry>
|
|
<entry>"2M"</entry>
|
|
<entry>PHP_INI_SYSTEM|PHP_INI_PERDIR</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</para>
|
|
|
|
&ini.descriptions.title;
|
|
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry id="ini.file-uploads">
|
|
<term>
|
|
<parameter>file_uploads</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Whether or not to allow HTTP
|
|
<link linkend="features.file-upload">file uploads</link>. See also
|
|
the
|
|
<link linkend="ini.upload-max-filesize">upload_max_filesize</link>,
|
|
<link linkend="ini.upload-tmp-dir">upload_tmp_dir</link>, and
|
|
<link linkend="ini.post-max-size">post_max_size</link> directives.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.upload-tmp-dir">
|
|
<term>
|
|
<parameter>upload_tmp_dir</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The temporary directory used for storing files when doing
|
|
file upload. Must be writable by whatever user <literal>PHP</literal>
|
|
is running as. If not specified PHP will use the system's default.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.upload-max-filesize">
|
|
<term>
|
|
<parameter>upload_max_filesize</parameter>
|
|
<type>integer</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The maximum size of an uploaded file.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sql-general">
|
|
<title>General SQL</title>
|
|
<para>
|
|
<table>
|
|
<title>General SQL Configuration Options</title>
|
|
<tgroup cols="3">
|
|
<thead>
|
|
<row>
|
|
<entry>Name</entry>
|
|
<entry>Default</entry>
|
|
<entry>Changeable</entry>
|
|
</row>
|
|
</thead>
|
|
<tbody>
|
|
<row>
|
|
<entry>sql.safe_mode</entry>
|
|
<entry>"0"</entry>
|
|
<entry>PHP_INI_SYSTEM</entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
</para>
|
|
|
|
&ini.descriptions.title;
|
|
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry id="ini.sql.safe-mode">
|
|
<term>
|
|
<parameter>sql.safe_mode</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="ini.sect.debugger">
|
|
<title>Debugger Configuration Directives</title>
|
|
<caution>
|
|
<para>
|
|
Only PHP 3 implements a default debugger, for more information see <xref
|
|
linkend="debugger"/>.
|
|
</para>
|
|
</caution>
|
|
|
|
<variablelist>
|
|
<varlistentry id="ini.debugger.host">
|
|
<term>
|
|
<parameter>debugger.host</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
DNS name or IP address of host used by the debugger.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.debugger.port">
|
|
<term>
|
|
<parameter>debugger.port</parameter>
|
|
<type>string</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Port number used by the debugger.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ini.debugger.enabled">
|
|
<term>
|
|
<parameter>debugger.enabled</parameter>
|
|
<type>boolean</type>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Whether the debugger is enabled.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
</sect2>
|
|
|
|
</sect1>
|
|
|
|
</chapter>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|