runkit7_function_redefine
(PECL runkit7 >= Unknown)
runkit7_function_redefine — Replace a function definition with a new implementation
说明
runkit7_function_redefine
( string
$funcname
, string $arglist
, string $code
, bool $return_by_reference = null
, string $doc_comment = null
, string $return_type = ?
, bool $is_strict = ?
) : bool
runkit7_function_redefine
( string
$funcname
, Closure $closure
, string $doc_comment = null
, string $return_type = ?
, bool $is_strict = ?
) : bool注意: 默认情况下，仅在用户空间可删除，重命名，或者修改函数。为了覆盖内部函数，必须启用 php.ini 中的
runkit.internal_override设置。
参数
-
funcname -
Name of function to redefine
-
arglist -
New list of arguments to be accepted by function
-
code -
New code implementation
-
closure -
A closure that defines the function.
-
return_by_reference -
Whether the function should return by reference.
-
doc_comment -
The doc comment of the function.
-
return_type -
The return type of the function.
-
is_strict -
Whether the function 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
示例 #1 A runkit7_function_redefine() example
<?php
function testme() {
echo "Original Testme Implementation\n";
}
testme();
runkit7_function_redefine('testme','','echo "New Testme Implementation\n";');
testme();
?>
以上例程会输出：
Original Testme Implementation New Testme Implementation
参见
- runkit7_function_add() - Add a new function, similar to create_function
- runkit7_function_copy() - Copy a function to a new function name
- runkit7_function_rename() - Change a function's name
- runkit7_function_remove() - Remove a function definition
- runkit7_method_redefine() - Dynamically changes the code of the given method