Php/docs/function.runkit7-function-redefine

来自菜鸟教程
跳转至:导航、​搜索

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