public static function get($arr, $str_path, $default=null) {
		$path = explode('.', $str_path);
		return static::array_get($arr, $path, $default);
	}
public static function get($arr, $str_path, $default=null) {
		$path = explode('.', $str_path);
		return static::array_get($arr, $path, $default);
	}
public static function get ( $ arr , $ str_path , $ default = null ) { $ path = explode ( '.' , $ str_path ) ; return static :: array_get ( $ arr , $ path , $ default ) ; }
Get element from array, with a path.
@param  array  $arr
@param  string $str_path  nested keys separated by ".".
@param  mixed  $default
@return mixed
@api
Get element from array with a path .