classkit_method_redefine

(PECL classkit >= 0.1)

classkit_method_redefine — Dynamically changes the code of the given method

说明

bool classkit_method_redefine ( string $classname , string $methodname , string $args , string $code [, int $flags = CLASSKIT_ACC_PUBLIC ] )

Note: 此函数不能用来操作当前正常运行（或运行链上）的方法。

Warning

此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担。

参数

classname: The class in which to redefine the method
methodname: The name of the method to redefine
args: Comma-delimited list of arguments for the redefined method
code: The new code to be evaluated when methodname is called
flags: The redefined method can be CLASSKIT_ACC_PUBLIC , CLASSKIT_ACC_PROTECTED or CLASSKIT_ACC_PRIVATE

Note:

This parameter is only used as of PHP 5, because, prior to this, all methods were public.

返回值

成功时返回 TRUE ，或者在失败时返回 FALSE 。

范例

Example #1 classkit_method_redefine() example

  <?php
 class  Example  {
    function  foo () {
        return  "foo!\n" ;
    }
}

 // create an Example object
 $e  = new  Example ();

 // output Example::foo() (before redefine)
 echo  "Before: "  .  $e -> foo ();

 // Redefine the 'foo' method
 classkit_method_redefine (
     'Example' ,
     'foo' ,
     '' ,
     'return "bar!\n";' ,
     CLASSKIT_ACC_PUBLIC
 );

 // output Example::foo() (after redefine)
 echo  "After: "  .  $e -> foo ();
 ?>

以上例程会输出：

Before: foo!
After: bar!

参见

classkit_method_add() - Dynamically adds a new method to a given class
classkit_method_copy() - Copies a method from class to another
classkit_method_remove() - Dynamically removes the given method
classkit_method_rename() - Dynamically changes the name of the given method