mirror of
https://github.com/sigmasternchen/php-doc-en
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aea2855eea
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@299728 c90b9560-bf6c-de11-be94-00142212c4b1
125 lines
2.6 KiB
XML
125 lines
2.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.apc-exists" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>apc_exists</refname>
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<refpurpose>Checks if APC key exists</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>mixed</type><methodname>apc_exists</methodname>
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<methodparam><type>mixed</type><parameter>keys</parameter></methodparam>
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</methodsynopsis>
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<para>
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Checks if one ore more APC keys exist.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<variablelist>
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<varlistentry>
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<term><parameter>keys</parameter></term>
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<listitem>
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<para>
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A <type>string</type>, or an <type>array</type> of strings, that
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contain keys.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns &true; if the key exists, otherwise &false; Or if an
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<type>array</type> was passed to <parameter>keys</parameter>, then
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an array is returned that contains all existing keys, or an empty
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array if none exist.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<example>
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<title><function>apc_exists</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$fruit = 'apple';
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$veggie = 'carrot';
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apc_store('foo', $fruit);
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apc_store('bar', $veggie);
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if (apc_exists('foo')) {
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echo "Foo exists: ";
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echo apc_fetch('foo');
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} else {
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echo "Foo does not exist";
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}
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echo PHP_EOL;
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if (apc_exists('baz')) {
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echo "Baz exists.";
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} else {
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echo "Baz does not exist";
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}
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echo PHP_EOL;
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$ret = apc_exists(array('foo', 'donotexist', 'bar'));
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var_dump($ret);
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?>
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]]>
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</programlisting>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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Foo exists: apple
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Baz does not exist
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array(2) {
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["foo"]=>
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bool(true)
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["bar"]=>
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bool(true)
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}
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]]>
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</screen>
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</example>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<simplelist>
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<member><function>apc_cache_info</function></member>
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<member><function>apc_fetch</function></member>
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</simplelist>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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