runkit7_method_redefine

(PECL runkit7 >= Unknown)

runkit7_method_redefine — Dynamically changes the code of the given method

说明

runkit7_method_redefine ( string $classname , string $methodname , string $args , string $code [, int $flags = RUNKIT7_ACC_PUBLIC [, string $doc_comment = NULL [, string $return_type [, bool $is_strict ]]]] ) : bool
runkit7_method_redefine ( string $classname , string $methodname , Closure $closure [, int $flags = RUNKIT7_ACC_PUBLIC [, string $doc_comment = NULL [, string $return_type [, bool $is_strict ]]]] ) : bool

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

closure

A closure that defines the method.

flags

The redefined method can be RUNKIT7_ACC_PUBLIC, RUNKIT7_ACC_PROTECTED or RUNKIT7_ACC_PRIVATE optionally combined via bitwise OR with RUNKIT7_ACC_STATIC

doc_comment

The doc comment of the method.

return_type

The return type of the method.

is_strict

Whether the method behaves as if it was declared in a file with strict_types=1.

返回值

成功时返回 TRUE， 或者在失败时返回 FALSE。

范例

Example #1 runkit7_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
runkit7_method_redefine(
    'Example',
    'foo',
    '',
    'return "bar!\n";',
    RUNKIT7_ACC_PUBLIC
);

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

以上例程会输出：

Before: foo!
After: bar!

参见