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<h1 class="refname">mysqlnd_qc_clear_cache</h1>
<p class="verinfo">(PECL mysqlnd_qc >= 1.0.0)</p><p class="refpurpose"><span class="refname">mysqlnd_qc_clear_cache</span> — <span class="dc-title">Flush all cache contents</span></p>
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<div class="refsect1 description" id="refsect1-function.mysqlnd-qc-clear-cache-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span>
<span class="methodname"><strong>mysqlnd_qc_clear_cache</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
Flush all cache contents.
</p>
<p class="para">
Flushing the cache is a storage handler responsibility.
All built-in storage handler but the
<em>memcache</em> storage
handler support flushing the cache. The
<em>memcache</em>
storage handler cannot flush its cache contents.
</p>
<p class="para">
User-defined storage handler may or may not support the operation.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mysqlnd-qc-clear-cache-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mysqlnd-qc-clear-cache-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
<p class="para">
A return value of
<strong><code>FALSE</code></strong>
indicates that flushing all cache contents has
failed or the operation is not supported by
the active storage handler. Applications must
not expect that calling the function will always
flush the cache.
</p>
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