Forums Topic: Very simple function to validate email address in PHP

Forums Topic: Very simple function to validate email address in PHP http://www.tutorialhelpdesk.com/forum/ Tutorialhelpdesk programming forums en Sat, 22 Nov 2008 00:35:28 +0000 no1skid on "Very simple function to validate email address in PHP" http://www.tutorialhelpdesk.com/forum/topic/very-simple-function-to-validate-email-address-in-php#post-23 Sat, 05 Jul 2008 06:09:23 +0000 no1skid 23@http://www.tutorialhelpdesk.com/forum/ Very basic email validation. I have a function that also uses regex, but also the <a href="http://www.php.net/getmxrr">getmxrr</a> function that searches dns for MX records corresponding the hostname. <pre><code>function check_email($email) { // Create the syntactical validation regular expression $match = "^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-0-9-]+)*(\.[a-z]{2,4})$"; // Presume that the email is invalid $valid = 0; // Validate the syntax if (eregi($match, $email)) { list($username,$domain) = split("@",$email); // Validate the domain if (getmxrr($domain,$mxrecords)) $valid = 1; } else { $valid = 0; } return $valid; } ?></code></pre> thdadmin on "Very simple function to validate email address in PHP" http://www.tutorialhelpdesk.com/forum/topic/very-simple-function-to-validate-email-address-in-php#post-15 Wed, 02 Jul 2008 21:02:05 +0000 thdadmin 15@http://www.tutorialhelpdesk.com/forum/ The function uses regular expressions to validate the format of an email address. If you have questions and suggestions please let me know! <pre><code>function isValidEmail($email) { if(preg_match("/[.+a-zA-Z0-9_-]+@[a-zA-Z0-9-]+.[a-zA-Z]+/", $email) == 0) return false; else return true; }</code></pre>