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<title>Creates a new Pool of Workers</title>
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</div><hr /><div id="pool.construct" class="refentry">
<div class="refnamediv">
<h1 class="refname">Pool::__construct</h1>
<p class="verinfo">(PECL pthreads >= 2.0.0)</p><p class="refpurpose"><span class="refname">Pool::__construct</span> — <span class="dc-title">Creates a new Pool of Workers</span></p>
</div>
<div class="refsect1 description" id="refsect1-pool.construct-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type"><a href="class.pool.html" class="type Pool">Pool</a></span> <span class="methodname"><strong>Pool::__construct</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$class</code></span>
[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$ctor</code></span>
]] )</div>
<p class="para rdfs-comment">
Construct a new pool of workers. Pools lazily create their threads, which
means new threads will only be spawned when they are required to execute
tasks.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-pool.construct-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<code class="parameter">size</code></dt>
<dd>
<p class="para">
The maximum number of workers for this pool to create
</p>
</dd>
<dt>
<code class="parameter">class</code></dt>
<dd>
<p class="para">
The class for new Workers. If no class is given, then it defaults to the
<a href="class.worker.html" class="classname">Worker</a> class.
</p>
</dd>
<dt>
<code class="parameter">ctor</code></dt>
<dd>
<p class="para">
An array of arguments to be passed to new workers' constructors
</p>
</dd>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-pool.construct-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The new pool
</p>
</div>
<div class="refsect1 examples" id="refsect1-pool.construct-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4530">
<p><strong>Example #1 Creating Pools</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyWorker </span><span style="color: #007700">extends </span><span style="color: #0000BB">Worker </span><span style="color: #007700">{<br /> <br /> public function </span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">Something $something</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$this</span><span style="color: #007700">-></span><span style="color: #0000BB">something </span><span style="color: #007700">= </span><span style="color: #0000BB">$something</span><span style="color: #007700">;<br /> }<br /> <br /> public function </span><span style="color: #0000BB">run</span><span style="color: #007700">() {<br /> </span><span style="color: #FF8000">/** ... **/<br /> </span><span style="color: #007700">}<br />}<br /><br /></span><span style="color: #0000BB">$pool </span><span style="color: #007700">= new </span><span style="color: #0000BB">Pool</span><span style="color: #007700">(</span><span style="color: #0000BB">8</span><span style="color: #007700">, \</span><span style="color: #0000BB">MyWorker</span><span style="color: #007700">::class, [new </span><span style="color: #0000BB">Something</span><span style="color: #007700">()]);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$pool</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>
object(Pool)#1 (6) {
["size":protected]=>
int(8)
["class":protected]=>
string(8) "MyWorker"
["workers":protected]=>
NULL
["work":protected]=>
NULL
["ctor":protected]=>
array(1) {
[0]=>
object(Something)#2 (0) {
}
}
["last":protected]=>
int(0)
}
</pre></div>
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