Question

I cant seem to find anything in the code igniter documentation about this but I am trying to set a length validation in my form, is this possible?

regex_match[/^[0-9().-]+$/]

this is for phone numbers.

Answer 1

Use this regex:

^[0-9().-]{n,m}$

where n=minimum and m=maximum length.

You may omit the maximum to specify just a minimum, ie

^[0-9().-]{n,}$

or omit the minimum to specify just a maximum, ie

^[0-9().-]{,m}$

but this is the same as ^[0-9().-]{0,m}$ so it’s not as helpful as the minimum-only version.