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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.22 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.error-reporting">
<refnamediv>
<refname>error_reporting</refname>
<refpurpose>Sets which PHP errors are reported</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>error_reporting</methodname>
<methodparam choice="opt"><type>int</type><parameter>level</parameter></methodparam>
</methodsynopsis>
<para>
The <function>error_reporting</function> function sets the
<link linkend="ini.error-reporting">error_reporting</link>
directive at runtime. PHP has many levels of errors, using
this function sets that level for the duration (runtime) of
your script.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>level</parameter></term>
<listitem>
<para>
The new <link linkend="ini.error-reporting">error_reporting</link>
level. It takes on either a bitmask, or named constants. Using named
constants is strongly encouraged to ensure compatibility for future
versions. As error levels are added, the range of integers increases,
so older integer-based error levels will not always behave as expected.
</para>
<para>
The available error level constants are listed below. The actual
meanings of these error levels are described in the
<link linkend="errorfunc.constants">predefined constants</link>.
<table>
<title><function>error_reporting</function> level constants and bit values</title>
<tgroup cols="2">
<thead>
<row>
<entry>value</entry>
<entry>constant</entry>
</row>
</thead>
<tbody>
<row>
<entry>1</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-error">E_ERROR</link>
</entry>
</row>
<row>
<entry>2</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-warning">E_WARNING</link>
</entry>
</row>
<row>
<entry>4</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-parse">E_PARSE</link>
</entry>
</row>
<row>
<entry>8</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-notice">E_NOTICE</link>
</entry>
</row>
<row>
<entry>16</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-core-error">E_CORE_ERROR</link>
</entry>
</row>
<row>
<entry>32</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-core-warning">E_CORE_WARNING</link>
</entry>
</row>
<row>
<entry>64</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-compile-error">E_COMPILE_ERROR</link>
</entry>
</row>
<row>
<entry>128</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-compile-warning">E_COMPILE_WARNING</link>
</entry>
</row>
<row>
<entry>256</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-user-error">E_USER_ERROR</link>
</entry>
</row>
<row>
<entry>512</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-user-warning">E_USER_WARNING</link>
</entry>
</row>
<row>
<entry>1024</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-user-error">E_USER_NOTICE</link>
</entry>
</row>
<row>
<entry>6143</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-all">E_ALL</link>
</entry>
</row>
<row>
<entry>2048</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-strict">E_STRICT</link>
</entry>
</row>
<row>
<entry>4096</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-recoverable-error">E_RECOVERABLE_ERROR</link>
</entry>
</row>
<row>
<entry>8192</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-deprecated-error">E_DEPRECATED</link>
</entry>
</row>
<row>
<entry>16384</entry>
<entry>
<link linkend="errorfunc.constants.errorlevels.e-user-deprecated">E_USER_DEPRECATED</link>
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the old <link linkend="ini.error-reporting">error_reporting</link>
level.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.0.0</entry>
<entry><constant>E_STRICT</constant> introduced (not part of <constant>E_ALL</constant>).</entry>
</row>
<row>
<entry>5.2.0</entry>
<entry><constant>E_RECOVERABLE_ERROR</constant> introduced.</entry>
</row>
<row>
<entry>5.3.0</entry>
<entry><constant>E_DEPRECATED</constant> and <constant>E_USER_DEPRECATED</constant> introduced.</entry>
</row>
<row>
<entry>6</entry>
<entry><constant>E_STRICT</constant> became part of <constant>E_ALL</constant>.</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>error_reporting</function> examples</title>
<programlisting role="php">
<![CDATA[
<?php
// Turn off all error reporting
error_reporting(0);
// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);
// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);
// Report all errors except E_NOTICE
// This is the default value set in php.ini
error_reporting(E_ALL ^ E_NOTICE);
// Report all PHP errors
error_reporting(E_ALL);
// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<warning>
<simpara>
Most of <constant>E_STRICT</constant> errors are evaluated at the
compile time thus such errors are not reported in the file where
<link linkend="ini.error-reporting">error_reporting</link> is enhanced
to include <constant>E_STRICT</constant> errors (and vice versa).
</simpara>
</warning>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member>The <link linkend="ini.display-errors">display_errors</link> directive</member>
<member><function>ini_set</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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