[SOLVED] Check Email

[phpretard]

Can anyone point me in the direction of how to validate an email address based on DNS not just character string?

 

Usinf PHP of course.

[premiso]

checkdnsrr

[phpretard]

Excellent Refferece...

 

If a user posts [email protected] how do I separate the "info@" from the "test.com" so it can be included in the example array?

 

 

<?php

$EmailAddress="[email protected]";  // What is the best wat to seperate?

// checkdnsrr() support for Windows by HM2K <php [spat] hm2k.org>
function win_checkdnsrr($host, $type='MX') {
    if (strtoupper(substr(PHP_OS, 0, 3)) != 'WIN') { return; }
    if (empty($host)) { return; }
    $types=array('A', 'MX', 'NS', 'SOA', 'PTR', 'CNAME', 'AAAA', 'A6', 'SRV', 'NAPTR', 'TXT', 'ANY');
    if (!in_array($type,$types)) {
        user_error("checkdnsrr() Type '$type' not supported", E_USER_WARNING);
        return;
    }
    @exec('nslookup -type='.$type.' '.escapeshellcmd($host), $output);
    foreach($output as $line){
        if (preg_match('/^'.$host.'/',$line)) { return true; }
    }
}

// Define
if (!function_exists('checkdnsrr')) {
    function checkdnsrr($host, $type='MX') {
        return win_checkdnsrr($host, $type);
    }
}

/* example */

$domains=array('example.com','php.net');  // This is direct input without the prefix.
foreach ($domains as $domain) {
    $result=checkdnsrr($domain);
    echo $domain.':';
    echo $result?"true\n":"false\n";
}

?> 

[premiso]

explode

 

$string = "[email protected]";
list(,$domain) = explode("@", $string);