public static function FILTER_SANITIZE_ID($value)
	{
		$value = mb_strtolower($value, 'UTF-8');
		$value = preg_replace('/[^\p{L}0-9]+/u', ' ', $value);
		$value = preg_replace('/\s+/', '_', trim($value));
		
		return $value?:false;
	}
public static function FILTER_SANITIZE_ID($value)
	{
		$value = mb_strtolower($value, 'UTF-8');
		$value = preg_replace('/[^\p{L}0-9]+/u', ' ', $value);
		$value = preg_replace('/\s+/', '_', trim($value));
		
		return $value?:false;
	}
public static function FILTER_SANITIZE_ID ( $ value ) { $ value = mb_strtolower ( $ value , 'UTF-8' ) ; $ value = preg_replace ( '/[^\p{L}0-9]+/u' , ' ' , $ value ) ; $ value = preg_replace ( '/\s+/' , '_' , trim ( $ value ) ) ; return $ value ? : false ; }
not null lowercase id
not null lowercase id