# unregister_tick_function

(PHP 4 >= 4.0.3, PHP 5, PHP 7)

unregister_tick_function — De-register a function for execution on each tick

### 说明

unregister_tick_function ( string `$function_name` ) : void

De-registers the function named by `function_name` so it is no longer executed when a tick is called.

### 参数

`function_name`

  The function name, as a string.

### 返回值

没有返回值。

### 参见

- register_tick_function() - Register a function for execution on each tick