archived-doc-es/reference/spl/splobjectstorage.xml

<?xml version="1.0" encoding="utf-8"?>
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<phpdoc:classref xml:id="class.splobjectstorage" 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>La clase SplObjectStorage</title>
 <titleabbrev>SplObjectStorage</titleabbrev>
 
 <partintro>
  
  <!-- {{{ SplObjectStorage intro -->
  <section xml:id="splobjectstorage.intro">
   &reftitle.intro;
   <para>
    La clase SplObjectStorage proporciona una correspondencia de objetos de datos o,
    ignorando los datos, un conjunto de objetos. Este doble propósito puede ser útil en
    muchos casos relacionados con la necesidad de identificar objetos de forma única.
   </para>
  </section>
  <!-- }}} -->
  
  <section xml:id="splobjectstorage.synopsis">
   &reftitle.classsynopsis;
   
   <!-- {{{ Synopsis -->
   <classsynopsis>
    <ooclass><classname>SplObjectStorage</classname></ooclass>
    
    <!-- {{{ Class synopsis -->
    <classsynopsisinfo>
     <ooclass>
      <classname>SplObjectStorage</classname>
     </ooclass>
     
     <oointerface>
      <interfacename>Countable</interfacename>
     </oointerface>
     
     <oointerface>
      <interfacename>Iterator</interfacename>
     </oointerface>
     
     <oointerface>
      <interfacename>Serializable</interfacename>
     </oointerface>
     
     <oointerface>
      <interfacename>ArrayAccess</interfacename>
     </oointerface>
    </classsynopsisinfo>
    <!-- }}} -->
    
    <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
    <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.splobjectstorage')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[1])" />
   </classsynopsis>
   <!-- }}} -->
   
  </section>
  
  <!-- {{{ splobjectstorage examples -->
  <section xml:id="splobjectstorage.examples">
   &reftitle.examples;
   <para>
    <example>
     <title><classname>SplObjectStorage</classname> como un conjunto</title>
     <programlisting role="php">
<![CDATA[
<?php
// Como un conjunto de objetos
$s = new SplObjectStorage();

$o1 = new StdClass;
$o2 = new StdClass;
$o3 = new StdClass;

$s->attach($o1);
$s->attach($o2);

var_dump($s->contains($o1));
var_dump($s->contains($o2));
var_dump($s->contains($o3));

$s->detach($o2);

var_dump($s->contains($o1));
var_dump($s->contains($o2));
var_dump($s->contains($o3));
?>
]]>
     </programlisting>
     &example.outputs;
     <screen>
<![CDATA[
bool(true)
bool(true)
bool(false)
bool(true)
bool(false)
bool(false)
]]>
     </screen>
    </example>
    <example>
     <title><classname>SplObjectStorage</classname> como un mapa</title>
     <programlisting role="php">
<![CDATA[
<?php
// Como una correspondencia de objetos a datos
$s = new SplObjectStorage();

$o1 = new StdClass;
$o2 = new StdClass;
$o3 = new StdClass;

$s[$o1] = "data for object 1";
$s[$o2] = array(1,2,3);

if (isset($s[$o2])) {
    var_dump($s[$o2]);
}
?>
]]>
     </programlisting>
     &example.outputs;
     <screen>
<![CDATA[
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}
]]>
     </screen>
    </example>
   </para>
  </section>
  <!-- }}} -->
  
 </partintro>
 
 &reference.spl.entities.splobjectstorage;
 
</phpdoc:classref>

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