Source of: /manual/en/function.shm-has-var.php
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<div id="function.shm-has-var" class="refentry">
<div class="refnamediv">
<h1 class="refname">shm_has_var</h1>
<p class="verinfo">(PHP 5 >= 5.3.0)</p><p class="refpurpose"><span class="refname">shm_has_var</span> — <span class="dc-title">Check whether a specific entry exists</span></p>
</div>
<a name="function.shm-has-var.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>shm_has_var</b></span>
( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$shm_identifier</tt></span>
, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$variable_key</tt></span>
)</div>
<p class="para rdfs-comment">
Checks whether a specific key exists inside a shared memory segment.
</p>
</div>
<a name="function.shm-has-var.parameters"></a><div class="refsect1 parameters">
<h3 class="title">Parameters</h3>
<p class="para">
</p><dl>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">shm_identifier</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
Shared memory segment, obtained from <a href="function.shm-attach.php" class="function">shm_attach()</a>.
</p>
</dd>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">variable_key</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
The variable key.
</p>
</dd>
</dl>
<p>
</p>
</div>
<a name="function.shm-has-var.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <b><tt class="constant">TRUE</tt></b> if the entry exists, otherwise <b><tt class="constant">FALSE</tt></b>
</p>
</div>
<a name="function.shm-has-var.seealso"></a><div class="refsect1 seealso">
<h3 class="title">See Also</h3>
<p class="para">
</p><ul class="simplelist">
<li class="member"><a href="function.shm-get-var.php" class="function" rel="rdfs-seeAlso">shm_get_var()</a> - Returns a variable from shared memory</li>
<li class="member"><a href="function.shm-put-var.php" class="function" rel="rdfs-seeAlso">shm_put_var()</a> - Inserts or updates a variable in shared memory</li>
</ul><p>
</p>
</div>
</div><?php manual_footer(); ?>
