public static function uuid($version = self::UUID_V4){

        switch($version){
            case self::UUID_V4:
                $data = openssl_random_pseudo_bytes(16);

                $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0010
                $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10

                return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));

            default:
                throw new Exception("Invalid or unknown uuid version specified");
        }
    }
public static function uuid($version = self::UUID_V4){

        switch($version){
            case self::UUID_V4:
                $data = openssl_random_pseudo_bytes(16);

                $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0010
                $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10

                return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));

            default:
                throw new Exception("Invalid or unknown uuid version specified");
        }
    }
public static function uuid ( $ version = self :: UUID_V4 ) { switch ( $ version ) { case self :: UUID_V4 : $ data = openssl_random_pseudo_bytes ( 16 ) ; $ data [ 6 ] = chr ( ord ( $ data [ 6 ] ) & 0x0f | 0x40 ) ; // set version to 0010 $ data [ 8 ] = chr ( ord ( $ data [ 8 ] ) & 0x3f | 0x80 ) ; // set bits 6-7 to 10 return vsprintf ( '%s%s-%s-%s-%s-%s%s%s' , str_split ( bin2hex ( $ data ) , 4 ) ) ; default : throw new Exception ( "Invalid or unknown uuid version specified" ) ; } }
Generate a uuid according to a specific UUID definition
@param integer $version        format/version of UUID to generate
@throws \Exception
@return string
Generate a uuid according to a specific UUID definition