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<refentry id="function.Memcache-add">
 <refnamediv>
  <refname>Memcache::add</refname>
  <refpurpose>Add an item to the server</refpurpose>
 </refnamediv>
 <refsect1>
  <title>Description</title>
  <methodsynopsis>
   <type>bool</type><methodname>Memcache::add</methodname>
   <methodparam><type>string</type><parameter>key</parameter></methodparam>
   <methodparam><type>mixed</type><parameter>var</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>flag</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>expire</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>Memcache::add</function> stores variable
   <parameter>var</parameter> with <parameter>key</parameter> only if such 
   key doesn't exist at the server yet.
   <function>Memcache::add</function> returns &false; if such key already
   exist. For the rest <function>Memcache::add</function> behaves
   similarly to <function>Memcache::set</function>.
  </para>
  <para>
   Also you can use <function>memcache_add</function> function.
   See example below.
  </para>
  <example>
   <title><function>Memcache::add</function> example</title>
   <programlisting role="php">
<![CDATA[
<?php

$memcache_obj = memcache_connect("localhost", 11211);

/* procedural API */
memcache_add($memcache_obj, 'var_key', 'test variable', false, 30);

/* OO API */
$memcache_obj->add('var_key', 'test variable', false, 30);

?>
]]>
   </programlisting>
  </example>
  <para>
   <function>Memcache::add</function> returns &true; on success or &false; 
   on failure.
  </para>
  <para>
   See also
   <function>Memcache::set</function>, 
   <function>Memcache::replace</function>.
  </para>
 </refsect1>
</refentry>

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