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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<refentry id="function.ob-list-handlers">
<refnamediv>
<refname>ob_list_handlers</refname>
<refpurpose>
List all output handlers in use
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>array</type><methodname>ob_list_handlers</methodname>
<void/>
</methodsynopsis>
<para>
This will return an array with the output handlers in use (if any). If
<link
linkend="ini.output-buffering">output_buffering</link> is
enabled or an anonymous function was used with
<function>ob_start</function>, <function>ob_list_handlers</function> will
return "default output handler".
</para>
<para>
<example>
<title><function>ob_list_handlers</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
//using output_buffering=On
print_r(ob_list_handlers());
ob_end_flush();
ob_start("ob_gzhandler");
print_r(ob_list_handlers());
ob_end_flush();
// anonymous functions
ob_start(create_function('$string', 'return $string;'));
print_r(ob_list_handlers());
ob_end_flush();
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Array
(
[0] => default output handler
)
Array
(
[0] => ob_gzhandler
)
Array
(
[0] => default output handler
)
]]>
</screen>
</example>
</para>
<para>
See also
<function>ob_end_clean</function>,
<function>ob_end_flush</function>,
<function>ob_get_flush</function>,
<function>ob_start</function>.
</para>
</refsect1>
</refentry>
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