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<h1 class="refname">SplQueue::__construct</h1>
<p class="verinfo">(PHP 5 >= 5.3.0)</p><p class="refpurpose"><span class="refname">SplQueue::__construct</span> — <span class="dc-title">Constructs a new queue implemented using a doubly linked list</span></p>
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<div class="refsect1 description" id="refsect1-splqueue.construct-description">
<h3 class="title">Description</h3>
<div class="constructorsynopsis dc-description">
<span class="methodname"><strong>SplQueue::__construct()</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
This constructs a new empty queue.
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
This method automatically sets the iterator mode to
SplDoublyLinkedList::IT_MODE_FIFO.
</p>
</p></blockquote>
</p>
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<div class="refsect1 parameters" id="refsect1-splqueue.construct-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-splqueue.construct-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<div class="refsect1 examples" id="refsect1-splqueue.construct-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3798">
<p><strong>Example #1 <span class="function"><strong>SplQueue::__construct()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$q </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplQueue</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$q</span><span style="color: #007700">[] = </span><span style="color: #0000BB">1</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$q</span><span style="color: #007700">[] = </span><span style="color: #0000BB">2</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$q</span><span style="color: #007700">[] = </span><span style="color: #0000BB">3</span><span style="color: #007700">;<br /><br />foreach (</span><span style="color: #0000BB">$q </span><span style="color: #007700">as </span><span style="color: #0000BB">$elem</span><span style="color: #007700">) {<br /> echo </span><span style="color: #0000BB">$elem</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
1
2
3
</pre></div>
</div>
</div>
<div class="example" id="example-3799">
<p><strong>Example #2 Efficiently handling tasks with <a href="class.splqueue.html" class="classname">SplQueue</a></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$q </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplQueue</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$q</span><span style="color: #007700">-></span><span style="color: #0000BB">setIteratorMode</span><span style="color: #007700">(</span><span style="color: #0000BB">SplQueue</span><span style="color: #007700">::</span><span style="color: #0000BB">IT_MODE_DELETE</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// ... enqueue some tasks on the queue ...<br /><br />// process them<br /></span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$q </span><span style="color: #007700">as </span><span style="color: #0000BB">$task</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// ... process $task ...<br /><br /> // add new tasks on the queue<br /> </span><span style="color: #0000BB">$q</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$newTask</span><span style="color: #007700">;<br /> </span><span style="color: #FF8000">// ...<br /></span><span style="color: #007700">}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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