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

<?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