PHP function to check valid e-mail address

PHP function to check valid e-mail address

PHP function to check valid e-mail address

Are you wondering that email addresses in your database are valid or not? or thinking to sort bulky records from the database or want to check validity/correctness of email address submitted during registrations or subscribtions here is the simple PHP function to check correctness of submitted email address.


<?php
include "connect.php";

function is_correct($email) {
// First, we check that there's one @ symbol, and that the lengths are right
if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email)) {
// Email invalid because wrong number of characters in one section, or wrong number of @ symbols.
return false;
}
// Split it into sections to make life easier
$email_array = explode("@", $email);
$local_array = explode(".", $email_array[0]);
for ($i = 0; $i < sizeof($local_array); $i++) {
if (!ereg("^(([A-Za-z0-9!#$%&#038;'*+/=?^_`{|}~-][A-Za-z0-9!#$%&#038;'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$", $local_array[$i])) {
return false;
}
}
if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) { // Check if domain is IP. If not, it should be valid domain name
$domain_array = explode(".", $email_array[1]);
if (sizeof($domain_array) < 2) {
return false; // Not enough parts to domain
}
for ($i = 0; $i < sizeof($domain_array); $i++) {
if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$", $domain_array[$i])) {
return false;
}
}
}
return true;
}

// HOW TO USE
//   $checkemail= is_correct($correct[1]);
//   $checkemail2= is_correct($correct[2]);
// IT RETURNS TRUE or FALSE
?>


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abhijeet
Abhijeet specializes in developing software. A full-stack developer and Entrepreneur, he takes an idea and crafts it into a beautiful product - front to back. He develops on the LAMP Stack (PHP, MVC, Web API, Perl, Python, Azure, AWS, Google Cloud) and utilizes AngularJS and Angular Material for a structured client. Abhijeet is a self-starter with experience working in remote, agile environments mainly focusing on the security constraints. This is the developer, Project Manager and Consultant you are looking for.