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Added __set_state() example (same in var_export()) and __callStatic() in list.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@251213 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Felipe Pena 2008-01-23 22:34:20 +00:00
parent 75db80b3e0
commit f193f6c844
1 changed files with 49 additions and 3 deletions
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52
language/oop5/magic.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.19 $ -->
<!-- $Revision: 1.20 $ -->
<sect1 xml:id="language.oop5.magic" xmlns="http://docbook.org/ns/docbook">
<title>Magic Methods</title>
<para>
@ -8,16 +8,17 @@
<literal>__destruct</literal>
(see <link linkend="language.oop5.decon">Constructors and Destructors</link>),
<literal>__call</literal>,
<literal>__callStatic</literal>,
<literal>__get</literal>,
<literal>__set</literal>,
<literal>__isset</literal>,
<literal>__unset</literal>
<literal>__unset</literal>
(see <link linkend="language.oop5.overloading">Overloading</link>),
<literal>__sleep</literal>,
<literal>__wakeup</literal>,
<literal>__toString</literal>,
<literal>__set_state</literal> and
<link linkend="language.oop5.cloning">__clone</link>
<link linkend="language.oop5.cloning">__clone</link>
are magical in PHP classes. You
cannot have functions with these names in any of your
classes unless you want the magic functionality associated
@ -160,6 +161,51 @@ Hello
The only parameter of this method is an array containing exported
properties in the form <literal>array('property' => value, ...)</literal>.
</para>
<example>
<title>Using <literal>__set_state</literal> (since PHP 5.1.0)</title>
<programlisting role="php">
<![CDATA[
<?php
class A
{
public $var1;
public $var2;
public static function __set_state($an_array) // As of PHP 5.1.0
{
$obj = new A;
$obj->var1 = $an_array['var1'];
$obj->var2 = $an_array['var2'];
return $obj;
}
}
$a = new A;
$a->var1 = 5;
$a->var2 = 'foo';
eval('$b = ' . var_export($a, true) . ';'); // $b = A::__set_state(array(
// 'var1' => 5,
// 'var2' => 'foo',
// ));
var_dump($b);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
object(A)#2 (2) {
["var1"]=>
int(5)
["var2"]=>
string(3) "foo"
}
]]>
</screen>
</example>
</sect2>
</sect1>