public static function normalize($pattern)
	{
		//normalize the string pattern and return safe pattern for use
		return self::$delimiter.trim($pattern, self::$delimiter).self::$delimiter;

	}
public static function normalize($pattern)
	{
		//normalize the string pattern and return safe pattern for use
		return self::$delimiter.trim($pattern, self::$delimiter).self::$delimiter;

	}
public static function normalize ( $ pattern ) { //normalize the string pattern and return safe pattern for use return self :: $ delimiter . trim ( $ pattern , self :: $ delimiter ) . self :: $ delimiter ; }
This method normalizes the regular expression pattern before we use it

@param string $pattern The regular expression string to be used
@return string Normalized/Sanitized regular expression string
@throws This method does not throw an error
This method normalizes the regular expression pattern before we use it