runkit7_function_redefine

(PECL runkit7 >= Unknown)

runkit7_function_redefine — Replace a function definition with a new implementation

說明

runkit7_function_redefine(
    string $function_name,
    string $argument_list,
    string $code,
    bool $return_by_reference = null,
    string $doc_comment = null,
    string $return_type = ?,
    bool $is_strict = ?
): bool
runkit7_function_redefine(
    string $function_name,
    Closure $closure,
    string $doc_comment = null,
    string $return_type = ?,
    bool $is_strict = ?
): bool

注意: 默認(rèn)情況下，僅在用戶空間可刪除，重命名，或者修改函數(shù)。為了覆蓋內(nèi)部函數(shù)，必須啟用 php.ini 中的 runkit.internal_override 設(shè)置。

參數(shù)

function_name

Name of function to redefine

argument_list

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

成功時(shí)返回 true， 或者在失敗時(shí)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();
?>

以上例程會(huì)輸出：

Original Testme Implementation
New Testme Implementation

參見