ShortCode generator for PHP. Create short, hash like codes. Codes can be random or reversible. Output format is customizable (see the list below). You can generate random string code of your desired character length, e.g. 4, 6, 8 ... up to 20. Also, you can generate reversible codes from numbers. It's useful when you'll need to trace the original number from a reference code string. Can be used for generating small reference codes, tiny URLs or any other purpose.