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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@125876 c90b9560-bf6c-de11-be94-00142212c4b1
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Derick Rethans 2003-05-05 17:25:23 +00:00
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commit 065e5505ea
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reference/errorfunc/ini.xml
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@ -1,406 +1,406 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<section id="errorfunc.configuration">
&reftitle.runtime;
&extension.runtime;
<para>
<table>
<title>Errors and Logging Configuration Options</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Default</entry>
<entry>Changeable</entry>
</row>
</thead>
<tbody>
<row>
<entry>error_reporting</entry>
<entry>E_ALL &amp; ~E_NOTICE</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>display_errors</entry>
<entry>"1"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>display_startup_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>log_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>log_errors_max_len</entry>
<entry>"1024"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>ignore_repeated_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>ignore_repeated_source</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>report_memleaks</entry>
<entry>"1"</entry>
<entry>PHP_INI_SYSTEM</entry>
</row>
<row>
<entry>track_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>html_errors</entry>
<entry>"1"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>docref_root</entry>
<entry>"http://www.php.net/"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>docref_ext</entry>
<entry>".html"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_prepend_string</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_append_string</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_log</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>warn_plus_overloading</entry>
<entry>NULL</entry>
<entry>PHP_INI??</entry>
</row>
</tbody>
</tgroup>
</table>
For further details and definition of the PHP_INI_* constants see
<function>ini_set</function>.
</para>
<para>
Here is a short explanation of the configuration directives.
<variablelist>
<varlistentry id="ini.error-reporting">
<term>
<parameter>error_reporting</parameter>
<type>integer</type>
</term>
<listitem>
<para>
Set the error reporting level. The parameter is either an integer
representing a bit field, or named constants. The error_reporting
levels and constants are described in
<link linkend="errorfunc.constants">Predefined Constants</link>,
and in &php.ini;. To set at runtime, use the
<function>error_reporting</function> function. See also the
<link linkend="ini.display-errors">display_errors</link> directive.
</para>
<para>
In PHP 4 the default value does not show <constant>E_NOTICE</constant>
level errors. You may want to show them during development.
</para>
<note>
<para>Enabling <constant>E_NOTICE</constant> during development has
some benefits. For debugging purposes: NOTICE messages will warn you
about possibls bugs in your code. For example, use of unassigned values
are warned. It is extremely useful to find typos and
to save time for debugging. NOTICE messages will warn you about bad style.
For example, $arr[item] is better to be written as $arr['item'] since
PHP tries to treat "item" as constant. If it is not a constant, PHP assumes
it is a string index for the array.
</para>
</note>
<para>
In PHP 3, the default setting is
<literal>(E_ERROR | E_WARNING | E_PARSE)</literal>,
meaning the same thing. Note, however, that since constants are not
supported in PHP 3's <filename>php3.ini</filename>, the error_reporting
setting there must be numeric; hence, it is <literal>7</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.display-errors">
<term>
<parameter>display_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
This determines whether errors should be printed to the screen
as part of the output or if they should be hidden from the user.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.display-startup-errors">
<term>
<parameter>display_startup_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Even when display_errors is on, errors that occur during PHP's startup
sequence are not displayed. It's strongly recommended to keep
display_startup_errors off, except for debugging.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.log-errors">
<term>
<parameter>log_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Tells whether script error messages should be logged to the
server's error log or <link linkend="ini.error-log">error_log</link>.
This option is thus server-specific.
</para>
<note>
<para>
You're strongly advised to use error logging in place of
error displaying on production web sites.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry id="ini.log-errors-max-len">
<term>
<parameter>log_errors_max_len</parameter>
<type>integer</type>
</term>
<listitem>
<para>
Set the maximum length of log_errors in kbytes. In
<link linkend="ini.error-log">error_log</link> information about
the source is added. The default is 1024 and 0 allows to not apply
any maximum length at all.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.ignore-repeated-errors">
<term>
<parameter>ignore_repeated_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Do not log repeated messages. Repeated errors must occur in the same
file on the same line until
<link linkend="ini.ignore-repeated-source">ignore_repeated_source</link>
is set true.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.ignore-repeated-source">
<term>
<parameter>ignore_repeated_source</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Ignore source of message when ignoring repeated messages. When this setting
is On you will not log errors with repeated messages from different files or
sourcelines.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.report-memleaks">
<term>
<parameter>report_memleaks</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If this parameter is set to Off, then memory leaks will not be shown (on
stdout or in the log). This has only effect in a debug compile, and if
<link linkend="ini.error-reporting">error_reporting</link> includes
E_WARNING in the allowed list
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.track-errors">
<term>
<parameter>track_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If enabled, the last error message will always be present in the
variable <link linkend="reserved.variables.phperrormsg">$php_errormsg</link>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.html-errors">
<term>
<parameter>html_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Turn off HTML tags in error messages. The new format for html errors
produces clickable messages that direct the user to a page describing
the error or function in causing the error. These references are
affected by
<link linkend="ini.docref-root">docref_root</link> and
<link linkend="ini.docref-ext">docref_ext</link>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.docref-root">
<term>
<parameter>docref_root</parameter>
<type>string</type>
</term>
<listitem>
<para>
The new error format contains a reference to a page describing the error or
function in causing the error. In case of manual pages you can download the
manual in your language and set this ini directive to the url of your local
copy. If your local copy of the manual can be reached by '/manual/' you can
simply use <userinput>docref_root=/manual/</userinput>. Additional you have
to set docref_ext to match the fileextensions of your copy
<userinput>docref_ext=.html</userinput>. It is possible to use external
references. For example you can use
<userinput>docref_root=http://manual/en/</userinput> or
<userinput>docref_root="http://landonize.it/?how=url&amp;theme=classic&amp;filter=Landon
&amp;url=http%3A%2F%2Fwww.php.net%2F"</userinput>
</para>
<para>
Most of the time you want the docref_root value to end with a slash '/'.
But see the second example above which does not have nor need it.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.docref-ext">
<term>
<parameter>docref_ext</parameter>
<type>string</type>
</term>
<listitem>
<para>
See <link linkend="ini.docref-root">docref_root</link>.
</para>
<note>
<para>
The value of docref_ext must begin with a dot '.'.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry id="ini.error-prepend-string">
<term>
<parameter>error_prepend_string</parameter>
<type>string</type>
</term>
<listitem>
<para>
String to output before an error message.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.error-append-string">
<term>
<parameter>error_append_string</parameter>
<type>string</type>
</term>
<listitem>
<para>
String to output after an error message.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.error-log">
<term>
<parameter>error_log</parameter>
<type>string</type>
</term>
<listitem>
<para>
Name of the file where script errors should be logged. If the
special value <literal>syslog</literal> is used, the errors
are sent to the system logger instead. On UNIX, this means
syslog(3) and on Windows NT it means the event log. The
system logger is not supported on Windows 95. See also:
<function>syslog</function>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.warn-plus-overloading">
<term>
<parameter>warn_plus_overloading</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If enabled, this option makes PHP output a warning when the
plus (<literal>+</literal>) operator is used on strings.
This is to make it easier to find scripts that need to be
rewritten to using the string concatenator instead
(<literal>.</literal>).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</section>
<!-- 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
-->
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<section id="errorfunc.configuration">
&reftitle.runtime;
&extension.runtime;
<para>
<table>
<title>Errors and Logging Configuration Options</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Default</entry>
<entry>Changeable</entry>
</row>
</thead>
<tbody>
<row>
<entry>error_reporting</entry>
<entry>E_ALL &amp; ~E_NOTICE</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>display_errors</entry>
<entry>"1"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>display_startup_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>log_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>log_errors_max_len</entry>
<entry>"1024"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>ignore_repeated_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>ignore_repeated_source</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>report_memleaks</entry>
<entry>"1"</entry>
<entry>PHP_INI_SYSTEM</entry>
</row>
<row>
<entry>track_errors</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>html_errors</entry>
<entry>"1"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>docref_root</entry>
<entry>"http://www.php.net/"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>docref_ext</entry>
<entry>".html"</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_prepend_string</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_append_string</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>error_log</entry>
<entry>NULL</entry>
<entry>PHP_INI_ALL</entry>
</row>
<row>
<entry>warn_plus_overloading</entry>
<entry>NULL</entry>
<entry>PHP_INI??</entry>
</row>
</tbody>
</tgroup>
</table>
For further details and definition of the PHP_INI_* constants see
<function>ini_set</function>.
</para>
<para>
Here is a short explanation of the configuration directives.
<variablelist>
<varlistentry id="ini.error-reporting">
<term>
<parameter>error_reporting</parameter>
<type>integer</type>
</term>
<listitem>
<para>
Set the error reporting level. The parameter is either an integer
representing a bit field, or named constants. The error_reporting
levels and constants are described in
<link linkend="errorfunc.constants">Predefined Constants</link>,
and in &php.ini;. To set at runtime, use the
<function>error_reporting</function> function. See also the
<link linkend="ini.display-errors">display_errors</link> directive.
</para>
<para>
In PHP 4 the default value does not show <constant>E_NOTICE</constant>
level errors. You may want to show them during development.
</para>
<note>
<para>Enabling <constant>E_NOTICE</constant> during development has
some benefits. For debugging purposes: NOTICE messages will warn you
about possibls bugs in your code. For example, use of unassigned values
are warned. It is extremely useful to find typos and
to save time for debugging. NOTICE messages will warn you about bad style.
For example, $arr[item] is better to be written as $arr['item'] since
PHP tries to treat "item" as constant. If it is not a constant, PHP assumes
it is a string index for the array.
</para>
</note>
<para>
In PHP 3, the default setting is
<literal>(E_ERROR | E_WARNING | E_PARSE)</literal>,
meaning the same thing. Note, however, that since constants are not
supported in PHP 3's <filename>php3.ini</filename>, the error_reporting
setting there must be numeric; hence, it is <literal>7</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.display-errors">
<term>
<parameter>display_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
This determines whether errors should be printed to the screen
as part of the output or if they should be hidden from the user.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.display-startup-errors">
<term>
<parameter>display_startup_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Even when display_errors is on, errors that occur during PHP's startup
sequence are not displayed. It's strongly recommended to keep
display_startup_errors off, except for debugging.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.log-errors">
<term>
<parameter>log_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Tells whether script error messages should be logged to the
server's error log or <link linkend="ini.error-log">error_log</link>.
This option is thus server-specific.
</para>
<note>
<para>
You're strongly advised to use error logging in place of
error displaying on production web sites.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry id="ini.log-errors-max-len">
<term>
<parameter>log_errors_max_len</parameter>
<type>integer</type>
</term>
<listitem>
<para>
Set the maximum length of log_errors in kbytes. In
<link linkend="ini.error-log">error_log</link> information about
the source is added. The default is 1024 and 0 allows to not apply
any maximum length at all.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.ignore-repeated-errors">
<term>
<parameter>ignore_repeated_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Do not log repeated messages. Repeated errors must occur in the same
file on the same line until
<link linkend="ini.ignore-repeated-source">ignore_repeated_source</link>
is set true.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.ignore-repeated-source">
<term>
<parameter>ignore_repeated_source</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Ignore source of message when ignoring repeated messages. When this setting
is On you will not log errors with repeated messages from different files or
sourcelines.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.report-memleaks">
<term>
<parameter>report_memleaks</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If this parameter is set to Off, then memory leaks will not be shown (on
stdout or in the log). This has only effect in a debug compile, and if
<link linkend="ini.error-reporting">error_reporting</link> includes
E_WARNING in the allowed list
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.track-errors">
<term>
<parameter>track_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If enabled, the last error message will always be present in the
variable <link linkend="reserved.variables.phperrormsg">$php_errormsg</link>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.html-errors">
<term>
<parameter>html_errors</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
Turn off HTML tags in error messages. The new format for html errors
produces clickable messages that direct the user to a page describing
the error or function in causing the error. These references are
affected by
<link linkend="ini.docref-root">docref_root</link> and
<link linkend="ini.docref-ext">docref_ext</link>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.docref-root">
<term>
<parameter>docref_root</parameter>
<type>string</type>
</term>
<listitem>
<para>
The new error format contains a reference to a page describing the error or
function in causing the error. In case of manual pages you can download the
manual in your language and set this ini directive to the url of your local
copy. If your local copy of the manual can be reached by '/manual/' you can
simply use <userinput>docref_root=/manual/</userinput>. Additional you have
to set docref_ext to match the fileextensions of your copy
<userinput>docref_ext=.html</userinput>. It is possible to use external
references. For example you can use
<userinput>docref_root=http://manual/en/</userinput> or
<userinput>docref_root="http://landonize.it/?how=url&amp;theme=classic&amp;filter=Landon
&amp;url=http%3A%2F%2Fwww.php.net%2F"</userinput>
</para>
<para>
Most of the time you want the docref_root value to end with a slash '/'.
But see the second example above which does not have nor need it.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.docref-ext">
<term>
<parameter>docref_ext</parameter>
<type>string</type>
</term>
<listitem>
<para>
See <link linkend="ini.docref-root">docref_root</link>.
</para>
<note>
<para>
The value of docref_ext must begin with a dot '.'.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry id="ini.error-prepend-string">
<term>
<parameter>error_prepend_string</parameter>
<type>string</type>
</term>
<listitem>
<para>
String to output before an error message.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.error-append-string">
<term>
<parameter>error_append_string</parameter>
<type>string</type>
</term>
<listitem>
<para>
String to output after an error message.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.error-log">
<term>
<parameter>error_log</parameter>
<type>string</type>
</term>
<listitem>
<para>
Name of the file where script errors should be logged. If the
special value <literal>syslog</literal> is used, the errors
are sent to the system logger instead. On UNIX, this means
syslog(3) and on Windows NT it means the event log. The
system logger is not supported on Windows 95. See also:
<function>syslog</function>.
</para>
</listitem>
</varlistentry>
<varlistentry id="ini.warn-plus-overloading">
<term>
<parameter>warn_plus_overloading</parameter>
<type>boolean</type>
</term>
<listitem>
<para>
If enabled, this option makes PHP output a warning when the
plus (<literal>+</literal>) operator is used on strings.
This is to make it easier to find scripts that need to be
rewritten to using the string concatenator instead
(<literal>.</literal>).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</section>
<!-- 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
-->