Verify Email Online : With Source Code And Explanation.

Friends,

as i received a lots of request for sharing "tutorials on making utility and tools".
now i am going to share this small online tool for verify email id, by using mx record.
below is the code for this tool,

<html>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-8">
<?php
function validate_email($email) {
   if (preg_match("/[\\000-\\037]/",$email)) {
      return false;
   }
   $pattern = "/^[-_a-z0-9\'+*$^&%=~!?{}]++(?:\.[-_a-z0-9\'+*$^&%=~!?{}]+)*+@(?:(?![-.])[-a-z0-9.]+(?<![-.])\.[a-z]{2,6}|\d{1,3}(?:\.\d{1,3}){3})(?::\d++)?$/iD";
   if(!preg_match($pattern, $email)){
      return false;
   }
   list($user,$domain) = explode('@',$email);
   if( function_exists('checkdnsrr') ) {
      if( !checkdnsrr($domain,"MX") ) { // Linux: PHP 4.3.0 and higher & Windows: PHP 5.3.0 and higher
         return false;
      }
   }
   else if( function_exists("getmxrr") ) {
      if ( !getmxrr($domain, $mxhosts) ) {
         return false;
      }
   }
   return true;
}

$email = $_POST["email"];
if($email)
{

if(validate_email($email)) {
 echo('✓ - This MX records exists; Maybe Valid email.');
}
else {
 echo('× - No MX record exists;  Invalid email.');
}

}
?>

How to use:-
Just save all code in a file name "verifyemail.php", and upload to a server which support php hosting.

Click here to check live working..

Working:-
we are using a Form to post email on self, (verifyemail.php).
when php variable set to email it will check valid format you can read whole code (it's simple and small :) ),
after that as a final step php breaks the email into two parts (user @ domain).
after that we are performing checkdnsrr function to check whether MX Record Exist or not.
hope you will like this small tool, i will soon share some more interesting tools.

Tags:

Email Tools Online Tools PHP Tools Website Tools

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Verify Email Online : With Source Code And Explanation.

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