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<title>This method checks whether a key is part of the hash</title>
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<h1 class="refname">QuickHashIntHash::exists</h1>
<p class="verinfo">(PECL quickhash >= Unknown)</p><p class="refpurpose"><span class="refname">QuickHashIntHash::exists</span> — <span class="dc-title">This method checks whether a key is part of the hash</span></p>
</div>
<div class="refsect1 description" id="refsect1-quickhashinthash.exists-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>QuickHashIntHash::exists</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
)</div>
<p class="para rdfs-comment">
This method checks whether an entry with the provided key exists in the
hash.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-quickhashinthash.exists-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">key</code></em></span>
<dd>
<p class="para">
The key of the entry to check for whether it exists in the hash.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-quickhashinthash.exists-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> when the entry was found, or <strong><code>FALSE</code></strong> when the entry is not
found.
</p>
</div>
<div class="refsect1 examples" id="refsect1-quickhashinthash.exists-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-5141">
<p><strong>Example #1 <span class="function"><strong>QuickHashIntHash::exists()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">//generate 200000 elements<br /></span><span style="color: #0000BB">$array </span><span style="color: #007700">= </span><span style="color: #0000BB">range</span><span style="color: #007700">( </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">199999 </span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$existingEntries </span><span style="color: #007700">= </span><span style="color: #0000BB">array_rand</span><span style="color: #007700">( </span><span style="color: #0000BB">array_flip</span><span style="color: #007700">( </span><span style="color: #0000BB">$array </span><span style="color: #007700">), </span><span style="color: #0000BB">180000 </span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$testForEntries </span><span style="color: #007700">= </span><span style="color: #0000BB">array_rand</span><span style="color: #007700">( </span><span style="color: #0000BB">array_flip</span><span style="color: #007700">( </span><span style="color: #0000BB">$array </span><span style="color: #007700">), </span><span style="color: #0000BB">1000 </span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$foundCount </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br /><br />echo </span><span style="color: #DD0000">"Creating hash: "</span><span style="color: #007700">, </span><span style="color: #0000BB">microtime</span><span style="color: #007700">( </span><span style="color: #0000BB">true </span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$hash </span><span style="color: #007700">= new </span><span style="color: #0000BB">QuickHashIntHash</span><span style="color: #007700">( </span><span style="color: #0000BB">100000 </span><span style="color: #007700">);<br />echo </span><span style="color: #DD0000">"Adding elements: "</span><span style="color: #007700">, </span><span style="color: #0000BB">microtime</span><span style="color: #007700">( </span><span style="color: #0000BB">true </span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />foreach( </span><span style="color: #0000BB">$existingEntries </span><span style="color: #007700">as </span><span style="color: #0000BB">$key </span><span style="color: #007700">)<br />{<br /> </span><span style="color: #0000BB">$hash</span><span style="color: #007700">-></span><span style="color: #0000BB">add</span><span style="color: #007700">( </span><span style="color: #0000BB">$key</span><span style="color: #007700">, </span><span style="color: #0000BB">56 </span><span style="color: #007700">);<br />}<br /><br />echo </span><span style="color: #DD0000">"Doing 1000 tests: "</span><span style="color: #007700">, </span><span style="color: #0000BB">microtime</span><span style="color: #007700">( </span><span style="color: #0000BB">true </span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />foreach( </span><span style="color: #0000BB">$testForEntries </span><span style="color: #007700">as </span><span style="color: #0000BB">$key </span><span style="color: #007700">)<br />{<br /> </span><span style="color: #0000BB">$foundCount </span><span style="color: #007700">+= </span><span style="color: #0000BB">$hash</span><span style="color: #007700">-></span><span style="color: #0000BB">exists</span><span style="color: #007700">( </span><span style="color: #0000BB">$key </span><span style="color: #007700">);<br />}<br />echo </span><span style="color: #DD0000">"Done, </span><span style="color: #0000BB">$foundCount</span><span style="color: #DD0000"> found: "</span><span style="color: #007700">, </span><span style="color: #0000BB">microtime</span><span style="color: #007700">( </span><span style="color: #0000BB">true </span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</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
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Creating hash: 1263588703.0748
Adding elements: 1263588703.0757
Doing 1000 tests: 1263588703.7851
Done, 898 found: 1263588703.7897
</pre></div>
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</p>
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