Hi All,
I need to validate the telephone number entered by the user in a form.
Following are the conditions.
1. The length of the string should be 10.
2. The first character should be ZERO.
3. Remaining 9 characters can be any digits from 1-9.
I am using the following code snippet to validate the user entry.
<?php
$input = '0123456789'; // User input
$pattern = '/^0[1-9]{9}$/'; // Pattern match
preg_match_all($pattern,$input,$matches);
if (count($matches) > 0) {
echo "Valid user Entry";
} else {
echo "Invalid user Entry";
}
?>My question is whether there is any possibility for an user to override my validation and get away with an invalid entry ?
I am not good with regular expressions. Any suggestions and comments is highly appreciated.
Thanks in advance.