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

<phpdoc:classref xml:id="class.weakmap" xmlns:phpdoc="http://php.net/ns/phpdoc" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">

 <title>The WeakMap class</title>
 <titleabbrev>WeakMap</titleabbrev>

 <partintro>

<!-- {{{ WeakMap intro -->
  <section xml:id="weakmap.intro">
   &reftitle.intro;
   <para>

   </para>
  </section>
<!-- }}} -->

  <section xml:id="weakmap.synopsis">
   &reftitle.classsynopsis;

<!-- {{{ Synopsis -->
   <classsynopsis>
    <ooclass><classname>WeakMap</classname></ooclass>

<!-- {{{ Class synopsis -->
    <classsynopsisinfo>
     <ooclass>
      <classname>WeakMap</classname>
     </ooclass>
     
     <oointerface>
      <interfacename>Countable</interfacename>
     </oointerface>

     <oointerface>
      <interfacename>ArrayAccess</interfacename>
     </oointerface>

     <oointerface>
      <interfacename>Iterator</interfacename>
     </oointerface>

    </classsynopsisinfo>
<!-- }}} -->
    
    <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.weakmap')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[1])" />
   </classsynopsis>
<!-- }}} -->

  </section>
<!-- {{{ weakmap examples -->
  <section xml:id="weakmap.examples">
   &reftitle.examples;
   <para>
    <example>
     <title><classname>Weakmap</classname> usage example</title>
     <programlisting role="php">
<![CDATA[
<?php
$wm = new WeakMap();

$o = new StdClass;

class A {
    public function __destruct() {
        echo "Dead!\n";
    }
}

$wm[$o] = new A;

var_dump(count($wm));
echo "Unsetting..\n";
unset($o);
echo "Done\n";
var_dump(count($wm));
]]>
     </programlisting>
     &example.outputs;
     <screen>
<![CDATA[
int(1)
Unsetting..
Dead!
Done
int(0)
]]>
     </screen>
    </example>
   </para>
  </section>
<!-- }}} -->

 </partintro>

 &reference.weakref.entities.weakmap;

</phpdoc:classref>

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