PHP Manual
Classkit 函数
Dynamically changes the code of the given method

classkit_method_redefine

(PECL classkit >= 0.1)

classkit_method_redefine — Dynamically changes the code of the given method

说明

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

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