<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<refentry xml:id="worker.unstack" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>Worker::unstack</refname>
  <refpurpose>Unstacking work</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>int</type><methodname>Worker::unstack</methodname>
   <void/>
  </methodsynopsis>
  <para>
   Removes the first task (the oldest one) in the stack.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  &no.function.parameters;
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The new size of the stack.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>v3</entry>
       <entry>
        The parameter to specify the task to unstack has been removed. Now, only the
        first task in the stack is removed.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Removing objects from the stack of Workers</title>
    <programlisting role="php">
<![CDATA[
<?php
$my = new Worker();
$work = new class extends Threaded {};

var_dump($my->stack($work));
var_dump($my->unstack());
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
int(1)
int(0)
]]>
    </screen>
   </example>
  </para>
 </refsect1>
</refentry>

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