Additional rule for Validation

CodeIgniter has a few roles related to restrict the input to alphanumeric characters. But it does not have a standard rule to limit the input for identifiers. You can of course use regular expressions (like [_a-zA-Z][_a-zA-Z0-9]*) but a native rule would be convenient and has a broad usage, I believe.

Regards,
Hardy

Doesn't the "alpha_dash" validation rule do this already?
See https://codeigniter4.github.io/CodeIgnit...able-rules

Doesn't the "alpha_dash" validation rule do this already?
See https://codeigniter4.github.io/CodeIgnit...able-rules

No, not according to the documentation and not according to the implementation: an identifier may not begin with a dash or a number!