Gets previously set hook on function or method

# uopz_get_hook

(PECL uopz 5)

uopz_get_hook — Gets previously set hook on function or method

### 説明

uopz_get_hook ( string `$function` ) : Closure
uopz_get_hook ( string `$class` , string `$function` ) : Closure

Gets the previously set hook on a function or method.

### パラメータ

`class`

  The name of the class.

`function`

  The name of the function or method.

### 返り値

Returns the previously set hook on a function or method, or `NULL` if no hook has been set.

### 例

例1 Basic uopz_get_hook() Usage

`<?php
function foo() {
echo 'foo';
}
uopz_set_hook('foo', function () {echo 'bar';});
var_dump(uopz_get_hook('foo'));
?>`

上の例の出力は、 たとえば以下のようになります。

    object(Closure)#2 (0) {
    }

### 参考

- uopz_set_hook() - Sets hook to execute when entering a function or method
- uopz_unset_hook() - Removes previously set hook on function or method