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phpinfo: Expanded documentation for 'what' parameter, added an example and
some other information. phpversion: minor update git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@68414 c90b9560-bf6c-de11-be94-00142212c4b1
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Philip Olson
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commit
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1 changed files with 107 additions and 20 deletions
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.86 $ -->
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<!-- $Revision: 1.87 $ -->
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<reference id="ref.info">
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<title>PHP options & information</title>
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<titleabbrev>PHP options/info</titleabbrev>
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@ -1503,21 +1503,105 @@ phpcredits(CREDITS_GROUP + CREDITS_DOCS + CREDITS_FULLPAGE);
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options, HTTP headers, and the PHP License.
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</para>
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<para>
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The output may be customized by passing one or more of the
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following values summed together in the optional parameter
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<parameter>what</parameter> (one can also combine them together
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with the <link linkend="language.operators.bitwise">or</link> operator.
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<itemizedlist>
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<listitem><simpara>INFO_GENERAL</simpara></listitem>
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<listitem><simpara>INFO_CREDITS</simpara></listitem>
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<listitem><simpara>INFO_CONFIGURATION</simpara></listitem>
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<listitem><simpara>INFO_MODULES</simpara></listitem>
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<listitem><simpara>INFO_ENVIRONMENT</simpara></listitem>
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<listitem><simpara>INFO_VARIABLES</simpara></listitem>
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<listitem><simpara>INFO_LICENSE</simpara></listitem>
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<listitem><simpara>INFO_ALL</simpara></listitem>
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</itemizedlist>
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Because every system is setup differently, <function>phpinfo</function>
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is commonly used to check <link linkend="configuration">configuration
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settings</link> and for available
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<link linkend="language.variables.predefined">predefined variables</link>
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on a given system. Also, <function>phpinfo</function> is a valuable
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debugging tool as it contains all EGPCS (Environment, GET, POST,
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Cookie, Server) data.
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</para>
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<para>
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The output may be customized by passing one or more of the following
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<emphasis>constants</emphasis> bitwise values summed together in the
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optional <parameter>what</parameter> parameter. One can also combine
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the respective constants or bitwise values together with the
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<link linkend="language.operators.bitwise">or</link> operator.
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<table>
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<title><function>phpinfo</function> 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 (constant)</entry>
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<entry>Bitwise value</entry>
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<entry>Description</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>INFO_GENERAL</entry>
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<entry>1</entry>
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<entry>The configuration line, php.ini location, build date,
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Web Server, System and more.
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</entry>
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</row>
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<row>
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<entry>INFO_CREDITS</entry>
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<entry>2</entry>
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<entry>PHP 4 Credits. See also <function>phpcredits</function>.</entry>
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</row>
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<row>
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<entry>INFO_CONFIGURATION</entry>
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<entry>4</entry>
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<entry>Current Local and Master values for php directives.
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See also <function>ini_get</function>.</entry>
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</row>
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<row>
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<entry>INFO_MODULES</entry>
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<entry>8</entry>
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<entry>Loaded modules and there respective settings.</entry>
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</row>
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<row>
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<entry>INFO_ENVIRONMENT</entry>
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<entry>16</entry>
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<entry>Environment Variable information that's also
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available in <varname>$_ENV</varname>.</entry>
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</row>
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<row>
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<entry>INFO_VARIABLES</entry>
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<entry>32</entry>
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<entry>Shows all predefined variables, from EGPCS
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(Environment, GET, POST, Cookie, Server).
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</entry>
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</row>
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<row>
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<entry>INFO_LICENSE</entry>
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<entry>64</entry>
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<entry>PHP License information. See also the
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<ulink url="&url.php.license;">license faq</ulink>.
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</entry>
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</row>
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<row>
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<entry>INFO_ALL</entry>
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<entry>-1</entry>
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<entry>Shows all of the above. This is the default.
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</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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<example>
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<title><function>phpinfo</function> examples</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// Show all information, defaults to INFO_ALL
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phpinfo();
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// Show just the module information.
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// phpinfo(8) yields identical results.
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phpinfo(INFO_MODULES);
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<note>
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<para>
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Parts of the information displayed are disabled when the
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@ -1528,8 +1612,9 @@ phpcredits(CREDITS_GROUP + CREDITS_DOCS + CREDITS_FULLPAGE);
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</note>
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<para>
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See also <function>phpversion</function>,
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<function>phpcredits</function>,
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<function>php_logo_guid</function>
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<function>phpcredits</function>, <function>php_logo_guid</function>,
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<function>ini_get</function>, <function>ini_set</function>, and the section
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on <link linkend="language.variables.predefined">Predefined Variables</link>.
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</para>
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</refsect1>
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</refentry>
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@ -1558,11 +1643,13 @@ phpcredits(CREDITS_GROUP + CREDITS_DOCS + CREDITS_FULLPAGE);
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</note>
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<para>
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<example>
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<title>phpversion() example</title>
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<title><function>phpversion</function> example</title>
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<programlisting role="php">
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<![CDATA[
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// prints e.g. 'Current PHP version: 3.0rel-dev'
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echo "Current PHP version: ".phpversion();
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<?php
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// prints e.g. 'Current PHP version: 4.1.1'
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echo 'Current PHP version: ' . phpversion();
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?>
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]]>
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</programlisting>
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</example>
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