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Add __callStatic() to oop5 Overloading page and clarify __call() example.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@254010 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Daniel Convissor 2008-03-01 02:59:26 +00:00
parent 776d390d42
commit 7bd3028ed9
1 changed files with 68 additions and 28 deletions
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96
language/oop5/overloading.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.22 $ -->
<!-- $Revision: 1.23 $ -->
<sect1 xml:id="language.oop5.overloading" xmlns="http://docbook.org/ns/docbook">
<title>Overloading</title>
@ -8,8 +8,6 @@
__call, __get and __set methods. These methods will only be
triggered when your object or inherited object doesn't contain the
<modifier>public</modifier> member or method you're trying to access.
All overloading methods must not be defined as
<link linkend="language.oop5.static">static</link>.
All overloading methods must be defined as
<link linkend="language.oop5.visibility">public</link>.
</para>
@ -169,36 +167,43 @@ object(Setter)#1 (2) {
<methodparam><type>string</type><parameter>name</parameter></methodparam>
<methodparam><type>array</type><parameter>arguments</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>mixed</type><methodname>__callStatic</methodname>
<methodparam><type>string</type><parameter>name</parameter></methodparam>
<methodparam><type>array</type><parameter>arguments</parameter></methodparam>
</methodsynopsis>
<para>
The magic method __call() allows to capture invocation of non existing
methods. That way __call() can be used to implement user defined method
The magic methods __call() and __callStatic()
allow capturing invocation of non existent methods.
These methods can be used to implement user defined method
handling that depends on the name of the actual method being called. This
is for instance useful for proxy implementations. The arguments that were
passed in the function will be defined as an array in the
<varname>$arguments</varname> parameter. The value returned from the
__call() method will be returned to the caller of the method.
<varname>$arguments</varname> parameter. The value returned from these
methods will be returned to the caller of the method.
</para>
<example>
<title>overloading with __call example</title>
<title>overloading instantiated methods with __call</title>
<programlisting role="php">
<![CDATA[
<?php
class Caller
{
private $x = array(1, 2, 3);
private $x = array(10, 20);
public function __call($m, $a)
{
print "Method $m called:\n";
print "Instantiated method '$m' called:\n";
var_dump($a);
return $this->x;
}
}
$foo = new Caller();
$a = $foo->test(1, "2", 3.4, true);
$a = $foo->test('a', 'b');
var_dump($a);
?>
]]>
@ -207,26 +212,61 @@ var_dump($a);
<screen role="php">
<![CDATA[
Method test called:
array(4) {
[0]=>
int(1)
[1]=>
string(1) "2"
[2]=>
float(3.4)
[3]=>
bool(true)
Instantiated method 'test' called:
array(2) {
[0]=>
string(1) "a"
[1]=>
string(1) "b"
}
array(3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
array(2) {
[0]=>
int(10)
[1]=>
int(20)
}
</screen>
</example>
<example>
<title>overloading instantiated methods with __call</title>
<programlisting role="php">
<![CDATA[
<?php
class Caller
{
private static $x = array(10, 20);
public static function __callStatic($m, $a)
{
print "Static method '$m' called:\n";
var_dump($a);
return self::$x;
}
}
$a = Caller::test('a', 'b');
var_dump($a);
?>
]]>
</programlisting>
&example.outputs;
<screen role="php">
<![CDATA[
Static method 'test' called:
array(2) {
[0]=>
string(1) "a"
[1]=>
string(1) "b"
}
array(2) {
[0]=>
int(10)
[1]=>
int(20)
}
</screen>
</example>