Email and phone number validation with PHP

Email and phone number validation with PHP
August 13, 2009, 12:45 pm - By: Chad Halvorson

Validating email and phone number's is a constant requirement with web forms. Here are the two functions we use for validating email and phone numbers with PHP.

function email_valid($email) {

if (eregi( " ^[a-z0-9._-]+@[a-z0-9._-]+.[a-z]{2,6}$ " , $email))

{ return TRUE; } else { return FALSE; }

}

function phone_valid($phone) {

if (eregi( " ^[0-9]{3}-[0-9]{3}-[0-9]{4}$ " , $phone))

{ return TRUE; } else { return FALSE; }

}


Phone numbers must be xxx-xxx-xxxx
Email addresses must be email addresses