Note to users: language constructs (eval, die, exit, isset, unset, echo etc.) which might be confused with functions, cannot be renamed or redefined even with runkit.internal_override.
(PECL runkit >= 0.7.0)
runkit_function_redefine — Replace a function definition with a new implementation
$funcname
, string $arglist
, string $code
[, bool $return_by_reference = NULL
[, string $doc_comment = NULL
]] )$funcname
, Closure $closure
[, string $doc_comment = NULL
] )Note: 默认情况下，仅在用户空间可删除，重命名，或者修改函数。为了覆盖内部函数，必须启用 php.ini 中的 runkit.internal_override 设置。
funcnameName of function to redefine
arglistNew list of arguments to be accepted by function
codeNew code implementation
closureA closure that defines the function.
return_by_referenceWhether the function should return by reference.
doc_commentThe doc comment of the function.
成功时返回 TRUE， 或者在失败时返回 FALSE。
| 版本 | 说明 |
|---|---|
| runkit 1.0.4 |
An alternative syntax expecting a closure has been added.
|
| runkit 1.0.4 |
The optional parameters return_by_reference and
doc_comment have been added.
|
Example #1 A runkit_function_redefine() example
<?php
function testme() {
echo "Original Testme Implementation\n";
}
testme();
runkit_function_redefine('testme','','echo "New Testme Implementation\n";');
testme();
?>
以上例程会输出：
Original Testme Implementation New Testme Implementation
Note to users: language constructs (eval, die, exit, isset, unset, echo etc.) which might be confused with functions, cannot be renamed or redefined even with runkit.internal_override.
Here is another example with a parameter:
<?php
function hello_world($word) {
echo "Original Hello World: $word\n</br>";
}
$helloWorld = 'echo "Redefined Hello World: $word\n</br>";';
hello_world('test1');
runkit_function_redefine('hello_world', '$word', $helloWorld);
hello_world('test2');
?>