Can you use static constants in PHP?

Question

I expected the following to work but it doesn't seem to.

<?php  class Patterns {     public static const EMAIL = "/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix";     public static const INT = "/^\d+$/";     public static const USERNAME = "/^\w+$/"; } 

Because it throws this error:

syntax error, unexpected T_CONST, expecting T_VARIABLE 

Answer 1

You can use const in class like this:

class Patterns {     const EMAIL = "/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix";     const INT = "/^\d+$/";     const USERNAME = "/^\w+$/"; } 

And can access USERNAME const like this:

Patterns::USERNAME