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<h1 class="refname">Memcached::getDelayedByKey</h1>
<p class="verinfo">(PECL memcached >= 0.1.0)</p><p class="refpurpose"><span class="refname">Memcached::getDelayedByKey</span> — <span class="dc-title">Request multiple items from a specific server</span></p>
</div>
<div class="refsect1 description" id="refsect1-memcached.getdelayedbykey-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Memcached::getDelayedByKey</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$server_key</code></span>
, <span class="methodparam"><span class="type">array</span> <code class="parameter">$keys</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$with_cas</code></span>
[, <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$value_cb</code></span>
]] )</div>
<p class="para rdfs-comment">
<span class="function"><strong>Memcached::getDelayedByKey()</strong></span> is functionally equivalent to
<span class="methodname"><a href="memcached.getdelayed.html" class="methodname">Memcached::getDelayed()</a></span>, except that the free-form
<em><code class="parameter">server_key</code></em> can be used to map the
<em><code class="parameter">keys</code></em> to a specific server.
</p>
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<div class="refsect1 parameters" id="refsect1-memcached.getdelayedbykey-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">server_key</code></em></span>
<dd>
<p class="para">
The key identifying the server to store the value on or retrieve it from. Instead of hashing on the actual key for the item, we hash on the server key when deciding which memcached server to talk to. This allows related items to be grouped together on a single server for efficiency with multi operations.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">keys</code></em></span>
<dd>
<p class="para">
Array of keys to request.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">with_cas</code></em></span>
<dd>
<p class="para">
Whether to request CAS token values also.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">value_cb</code></em></span>
<dd>
<p class="para">
The result callback or <strong><code>NULL</code></strong>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-memcached.getdelayedbykey-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.
Use <span class="methodname"><a href="memcached.getresultcode.html" class="methodname">Memcached::getResultCode()</a></span> if necessary.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-memcached.getdelayedbykey-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="methodname"><a href="memcached.getdelayed.html" class="methodname" rel="rdfs-seeAlso">Memcached::getDelayed()</a> - Request multiple items</span></li>
<li class="member"> <span class="methodname"><a href="memcached.fetch.html" class="methodname" rel="rdfs-seeAlso">Memcached::fetch()</a> - Fetch the next result</span></li>
<li class="member"> <span class="methodname"><a href="memcached.fetchall.html" class="methodname" rel="rdfs-seeAlso">Memcached::fetchAll()</a> - Fetch all the remaining results</span></li>
</ul>
</p>
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