<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Creates a new QuickHashIntSet object</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="quickhashintset.add.html">QuickHashIntSet::add</a></div> <div class="next" style="text-align: right; float: right;"><a href="quickhashintset.delete.html">QuickHashIntSet::delete</a></div> <div class="up"><a href="class.quickhashintset.html">QuickHashIntSet</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="quickhashintset.construct" class="refentry"> <div class="refnamediv"> <h1 class="refname">QuickHashIntSet::__construct</h1> <p class="verinfo">(PECL quickhash >= Unknown)</p><p class="refpurpose"><span class="refname">QuickHashIntSet::__construct</span> — <span class="dc-title">Creates a new QuickHashIntSet object</span></p> </div> <div class="refsect1 description" id="refsect1-quickhashintset.construct-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="methodname"><strong>QuickHashIntSet::__construct</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code></span> ] )</div> <p class="para rdfs-comment"> This constructor creates a new QuickHashIntSet. The size is the amount of bucket lists to create. The more lists there are, the less collisions you will have. Options are also supported. </p> </div> <div class="refsect1 parameters" id="refsect1-quickhashintset.construct-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <code class="parameter">size</code></dt> <dd> <p class="para"> The amount of bucket lists to configure. The number you pass in will be automatically rounded up to the next power of two. It is also automatically limited from 4 to 4194304. </p> </dd> <dt> <code class="parameter">options</code></dt> <dd> <p class="para"> The options that you can pass in are: QuickHashIntSet::CHECK_FOR_DUPES, which makes sure no duplicate entries are added to the set; QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC to not use PHP's internal memory manager as well as one of QuickHashIntSet::HASHER_NO_HASH, QuickHashIntSet::HASHER_JENKINS1 or QuickHashIntSet::HASHER_JENKINS2. These last three configure which hashing algorithm to use. All options can be combined using bitmasks. </p> </dd> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-quickhashintset.construct-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns a new QuickHashIntSet object. </p> </div> <div class="refsect1 examples" id="refsect1-quickhashintset.construct-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-6345"> <p><strong>Example #1 <span class="function"><strong>QuickHashIntSet::__construct()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />var_dump</span><span style="color: #007700">( new </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">( </span><span style="color: #0000BB">1024 </span><span style="color: #007700">) );<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">( new </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">( </span><span style="color: #0000BB">1024</span><span style="color: #007700">, </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">::</span><span style="color: #0000BB">CHECK_FOR_DUPES </span><span style="color: #007700">) );<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(<br /> new </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">(<br /> </span><span style="color: #0000BB">1024</span><span style="color: #007700">,<br /> </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">::</span><span style="color: #0000BB">DO_NOT_USE_ZEND_ALLOC </span><span style="color: #007700">| </span><span style="color: #0000BB">QuickHashIntSet</span><span style="color: #007700">::</span><span style="color: #0000BB">HASHER_JENKINS2 <br /> </span><span style="color: #007700">)<br />);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="quickhashintset.add.html">QuickHashIntSet::add</a></div> <div class="next" style="text-align: right; float: right;"><a href="quickhashintset.delete.html">QuickHashIntSet::delete</a></div> <div class="up"><a href="class.quickhashintset.html">QuickHashIntSet</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>