Start typing the code or paste it from the clipboard.
Here you can choose syntax highlighting mode. By the way, the service automatically checks the syntax of PHP code and displays errors if they exist.
Link will automatically appear in the address bar, as well as here. If you opened someone else's code and started to edit it, the service will automatically create a copy of the code at the new address.
Here you can switch between long and short links. Long links are safer, short links are more convenient.