Source of: /manual/en/function.memcache-flush.php
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<div id="function.memcache-flush" class="refentry">
<div class="refnamediv">
<h1 class="refname">Memcache::flush</h1>
<p class="verinfo">(PECL memcache >= 1.0.0)</p><p class="refpurpose"><span class="refname">Memcache::flush</span> — <span class="dc-title">Flush all existing items at the server</span></p>
</div>
<a name="function.memcache-flush.description"></a><div class="refsect1 description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><b>Memcache::flush</b></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
<b>Memcache::flush()</b> immediately invalidates all
existing items. <b>Memcache::flush()</b> doesn't
actually free any resources, it only marks all the items as expired, so
occupied memory will be overwritten by new items.
Also you can use <b>memcache_flush()</b> function.
</p>
</div>
<a name="function.memcache-flush.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <b><tt class="constant">TRUE</tt></b> on success or <b><tt class="constant">FALSE</tt></b> on failure.
</p>
</div>
<a name="function.memcache-flush.examples"></a><div class="refsect1 examples">
<h3 class="title">Examples</h3>
<p class="para">
</p><div class="example">
<p><b>Example #1 <b>Memcache::flush()</b> example</b></p>
<div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">/* procedural API */<br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= </span><span style="color: #0000BB">memcache_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">memcache_flush</span><span style="color: #007700">(</span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* OO API */<br /><br /></span><span style="color: #0000BB">$memcache_obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">Memcache</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'memcache_host'</span><span style="color: #007700">, </span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$memcache_obj</span><span style="color: #007700">-></span><span style="color: #0000BB">flush</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div><p>
</p>
</div>
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