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<title>Compares the variable with old value and assigns new value to it</title>
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</div><hr /><div id="function.wincache-ucache-cas" class="refentry">
<div class="refnamediv">
<h1 class="refname">wincache_ucache_cas</h1>
<p class="verinfo">(PECL wincache >= 1.1.0)</p><p class="refpurpose"><span class="refname">wincache_ucache_cas</span> — <span class="dc-title">
Compares the variable with old value and assigns new value to it
</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.wincache-ucache-cas-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>wincache_ucache_cas</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$old_value</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$new_value</code></span>
)</div>
<p class="para rdfs-comment">
Compares the variable associated with the <em><code class="parameter">key</code></em> with <em><code class="parameter">old_value</code></em>
and if it matches then assigns the <em><code class="parameter">new_value</code></em> to it.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.wincache-ucache-cas-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">key</code></em></span>
<dd>
<p class="para">
The <em><code class="parameter">key</code></em> that is used to store the variable in the cache.
<em><code class="parameter">key</code></em> is case sensitive.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">old_value</code></em></span>
<dd>
<p class="para">
Old value of the variable pointed by <em><code class="parameter">key</code></em> in the user cache.
The value should be of type <em>long</em>, otherwise the function returns
<strong><code>FALSE</code></strong>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">new_value</code></em></span>
<dd>
<p class="para">
New value which will get assigned to variable pointer by <em><code class="parameter">key</code></em> if a
match is found. The value should be of type <em>long</em>, otherwise
the function returns <strong><code>FALSE</code></strong>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.wincache-ucache-cas-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>
</div>
<div class="refsect1 examples" id="refsect1-function.wincache-ucache-cas-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-571">
<p><strong>Example #1 Using <span class="function"><strong>wincache_ucache_cas()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />wincache_ucache_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'counter'</span><span style="color: #007700">, </span><span style="color: #0000BB">2922</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_cas</span><span style="color: #007700">(</span><span style="color: #DD0000">'counter'</span><span style="color: #007700">, </span><span style="color: #0000BB">2922</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">wincache_ucache_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'counter'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
bool(true)
int(1)
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.wincache-ucache-cas-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.wincache-ucache-inc.html" class="function" rel="rdfs-seeAlso">wincache_ucache_inc()</a> - Increments the value associated with the key</span></li>
<li class="member"> <span class="function"><a href="function.wincache-ucache-dec.html" class="function" rel="rdfs-seeAlso">wincache_ucache_dec()</a> - Decrements the value associated with the key</span></li>
</ul>
</p>
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