PHP check specific characters

Question

I created a formula that lets you create code like this

12345-6789-101112

What I want now is, when validating the form I want you to vertifique if the code is correct for example.

Se contem 5(00000) em cada 3(00000-00000-00000).

Is there any way to do it?

Answer 1

One way is to use a regular expression to validate the specific format. [a-z0-9] means that only letters (a-z) and numbers (0-9) will enter the capture.

$str = '12345-67819-10111';
$regex = '/^[a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{5}$/i';

$valido = preg_match($regex, $str);