We can validate email id with use of regular expression or PHP standard function.
PHP Standard function:
$email = $_POST['email'];
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
echo 'This is a valid email.';
} else{
echo 'This is an invalid email.';
}
Regular Expression:
$email = $_POST['email'];
if(preg_match("~([a-zA-Z0-9!#$%&'*+-/=?^_`{|}~])@([a-zA-Z0-9-]).([a-zA-Z0-9]{2,4})~",$email)) {
echo 'This is a valid email.';
} else{
echo 'This is an invalid email.';
}
you can use above any one of method.
