1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 <?php namespace amekusa\plz; main::required;
/**
* Function utilities
*
* To get started, place the following line around top of your code.
* ```php
* use amekusa\plz\fn;
* ```
*/
abstract class fn {
/**
* Calls a function:`$X`
*
* Additionally:
*
* + If `$X` is not callable, returns `$Alt`
* + If `$X` is not callable, And `$Alt` is callable, calls `$Alt`
*
* @param callable $X A function to call
* @param mixed $Args *(optional)* Arguments to pass to `$X`. Pass an array for multiple parameters
* @param mixed $Alt *(optional)* A fail-safe value
* @return mixed A value `$X` returns or `$Alt`
*/
static function call($X, $Args = null, $Alt = null) {
if (!is_callable($X)) {
if (is_callable($Alt)) {
return isset($Args) ?
call_user_func_array($Alt, type::arr($Args)) :
call_user_func($Alt);
}
return $Alt;
}
return isset($Args) ?
call_user_func_array($X, type::arr($Args)) :
call_user_func($X);
}
}