(PECL classkit >= 0.1)
classkit_method_redefine — Dynamically changes the code of the given method
Note: 此函数不能用来操作当前正常运行（或运行链上）的方法。
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。使用本扩展风险自担 。
The class in which to redefine the method
The name of the method to redefine
Comma-delimited list of arguments for the redefined method
The new code to be evaluated when methodname is called
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.
成功时返回 TRUE， 或者在失败时返回 FALSE.
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!