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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<!-- splitted from ./en/functions/info.xml, last change in rev 1.72 -->
<refentry id="function.set-time-limit">
<refnamediv>
<refname>set_time_limit</refname>
<refpurpose>Limits the maximum execution time</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>void</type><methodname>set_time_limit</methodname>
<methodparam><type>int</type><parameter>seconds</parameter></methodparam>
</methodsynopsis>
<simpara>
Set the number of seconds a script is allowed to run. If this is
reached, the script returns a fatal error. The default limit is
30 seconds or, if it exists, the
<literal>max_execution_time</literal> value defined in the &php.ini;.
If <parameter>seconds</parameter> is set to zero, no time limit is
imposed.
</simpara>
<simpara>
When called, <function>set_time_limit</function> restarts the
timeout counter from zero. In other words, if the timeout is the
default 30 seconds, and 25 seconds into script execution a call
such as set_time_limit(20) is made, the script will run for a
total of 45 seconds before timing out.
</simpara>
<warning>
<para>
<function>set_time_limit</function> has no effect when PHP is
running in &safemode;. There is no workaround other than turning
off safe mode or changing the time limit in the &php.ini;.
</para>
</warning>
<note>
<para>
The <function>set_time_limit</function> function and the
configuration directive <link
linkend="ini.max-execution-time">max_execution_time</link> only
affect the execution time of the script itself. Any time spent
on activity that happens outside the execution of the script
such as system calls using <function>system</function>, stream
operations, database queries, etc. is not included when determining the
maximum time that the script has been running.
</para>
</note>
<simpara>
See also: <link
linkend="ini.max-execution-time">max_execution_time</link> and <link
linkend="ini.max-input-time">max_input_time</link> ini directives.
</simpara>
</refsect1>
</refentry>
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