Php/docs/function.runkit7-function-redefine
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
[, string $is_strict
]]]] ) : bool
runkit7_function_redefine
( string $funcname
, Closure $closure
[, string $doc_comment = null
[, string $return_type
[, string $is_strict
]]] ) : bool
Note:
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
Example #1 A runkit7_function_redefine() example
<?phpfunction 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
