Oct 10
This little function with regex is used for Email Address Verification - short and simple, but powerfull, i use it really often. Validating the proper format of an email address is handy, so your users cant type in invalid adresses and you dont have databases full of wrong email adresses.
Email addresses always have a standard format. We can check those with regular expressions:
function validateEmail($email) {
if (!preg_match(”/^( [a-zA-Z0-9] )+( [a-zA-Z0-9\._-] )*@( [a-zA-Z0-9_-] )+( [a-zA-Z0-9\._-] +)+$/” , $email)) {
return false;
}
return true;
}
You can now check your input data:
$email = $_POST[’email’];
if (validateEmail($email)) {
proceed();
} else {
echo ‘false’;
}
October 19th, 2007 at 8:22 pm
soy de argentina provincia de entre rios ciudad de urdinarrain c p 2826/ exelentes paginas de ciencias deceo tener contactos para escuelas y colegios materiales gracias eduardo aubert 19/10/07
November 10th, 2007 at 4:21 pm
well do you have any idea about how to check the email address by sending some smtp request or other request to validate that particular email address exists
Sanjeev
April 12th, 2008 at 2:43 am
Thank you for this code. It is really small. But I think it is easier to validate the email with Javascript, because it increases the usability of the application. If a person wants to fake the email, there is no way to prevent this, at least by giving you a valid not existing email.
April 20th, 2008 at 5:17 am
@Sanjeev
I use a special calss to validate email with SMTP. Sometihing like this: http://www.tutorials.de/forum/php-tutorials/231820-emails-ueber-einen-beliebigen-server-verschicken.html or PHPMailer