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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 296582 $ -->
<refentry xml:id="function.wincache-ucache-exists" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>wincache_ucache_exists</refname>
<refpurpose>
Checks if a variable exists in the user cache
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>wincache_ucache_exists</methodname>
<methodparam><type>string</type><parameter>key</parameter></methodparam>
</methodsynopsis>
<para>
Checks if a variable with the <parameter>key</parameter> exists in the user cache or not.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>key</parameter></term>
<listitem>
<para>
The <parameter>key</parameter> that was used to store the variable in the cache.
<parameter>key</parameter> is case sensitive.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns <literal>TRUE</literal> if variable with the <parameter>key</parameter> exitsts,
otherwise returns <literal>FALSE</literal>.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Using <function>wincache_ucache_exists</function></title>
<programlisting role="php">
<![CDATA[
<?php
if (!wincache_ucache_exists('green'))
wincache_ucache_set('green', 1);
var_dump(wincache_ucache_exists('green'));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
bool(true)
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>wincache_ucache_set</function></member>
<member><function>wincache_ucache_add</function></member>
<member><function>wincache_ucache_get</function></member>
<member><function>wincache_ucache_clear</function></member>
<member><function>wincache_ucache_delete</function></member>
<member><function>wincache_ucache_meminfo</function></member>
<member><function>wincache_ucache_info</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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-->
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