Validate e-mail address
This code validates e-mail address with regular expression. This code is from Drupal 6 common.inc.
<?php
function valid_email_address($mail) {
$user = '[a-zA-Z0-9_\-\.\+\^!#\$%&*+\/\=\?\`\|\{\}~\']+';
$domain = '(?:(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.?)+';
$ipv4 = '[0-9]{1,3}(\.[0-9]{1,3}){3}';
$ipv6 = '[0-9a-fA-F]{1,4}(\:[0-9a-fA-F]{1,4}){7}';
return preg_match("/^$user@($domain|(\[($ipv4|$ipv6)\]))$/", $mail);
}
?> This code is from Drupal 7, using filter_var function in PHP that filters a variable with a specified filter
<?php
function valid_email_address($mail) {
return (bool) filter_var($mail, FILTER_VALIDATE_EMAIL);
}
?>