class_alias Creates an alias for a class


class_alias

(PHP 5 >= 5.3.0)

class_aliasCreates an alias for a class

说明

bool class_alias ([ string $original [, string $alias ]] )

Creates an alias named alias based on the defined class original. The aliased class is exactly the same as the original class.

参数

original

The original class.

alias

The alias name for the class.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE.

范例

Example #1 class_alias() example

<?php

class foo { }

class_alias('foo''bar');

$a = new foo;
$b = new bar;

// the objects are the same
var_dump($a == $b$a === $b);
var_dump($a instanceof $b);

// the classes are the same
var_dump($a instanceof foo);
var_dump($a instanceof bar);

var_dump($b instanceof foo);
var_dump($b instanceof bar);

?>

以上例程会输出:

bool(true)
bool(false)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)

参见


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