Validate Mobile number in php form

Question

I want to validate mobile number of 10 digits and also add a prefix of 0 when I enter into the database.

Answer 1

Improving pravin tripathi's answer:

if(!ereg("^[7-9]{1}[0-9]{9}$", $mob)) { return false; }

since ereg() is deprecated, you could use

preg_match("/^[7-9]{1}[0-9]{9}$/i", $mobile_no)

This will help you validate a mobile number from India, since they are 10 digits and start with 7, 8 or 9 as of today. You could always change the pattern if new digits get introduced.