public function in_list(string $value = null, string $list, array $data): bool
	{
		$list = explode(',', $list);
		$list = array_map(function ($value) {
			return trim($value);
		}, $list);
		return in_array($value, $list, true);
	}
public function in_list(string $value = null, string $list, array $data): bool
	{
		$list = explode(',', $list);
		$list = array_map(function ($value) {
			return trim($value);
		}, $list);
		return in_array($value, $list, true);
	}
public function in_list ( string $ value = null , string $ list , array $ data ) : bool { $ list = explode ( ',' , $ list ) ; $ list = array_map ( function ( $ value ) { return trim ( $ value ) ; } , $ list ) ; return in_array ( $ value , $ list , true ) ; }
Value should be within an array of values

@param  string $value
@param  string $list
@param  array  $data
@return boolean
Value should be within an array of values