system_OS == "linux") // linuz { if (getmxrr($this -> hostName)) return TRUE; else return FALSE; } else { // windoz if(!empty($this -> hostName)) { exec("nslookup -type=".$this->recType." ".$this -> hostName, $result); // check each line to find the one that starts with the host // name. If it exists then the function succeeded. foreach ($result as $line) { if(eregi("^".$this -> hostName,$line)) return true; } // otherwise there was no mail handler for the domain return false; } return false; } } // brake address --> username & parent domain function check_email_dns() { list($this -> userName, $this -> hostName) = split("@", $this -> email); if (!$this -> checkDNS ($this -> hostName)) { $this -> check_DNS_result = "Address domain MX DNS record could NOT be found"; return FALSE; } else { $this -> check_DNS_result = "Address DNS MX is OK"; return TRUE; } } // check addresse's SYNTAX function check_email() { $this -> email = strtolower($this -> email); if (preg_match('/^[-!#$%&'*+./0-9=?A-Z^_`{|}~]+@([-0-9A-Z]+.)+([0-9A-Z]){2,4}$/i', $this -> email)) { $this -> check_MAIL_result = "Address syntax is OK"; return TRUE; } else { $this -> check_MAIL_result = "Address syntax is WRONG"; return FALSE; } } // global check function final_mail_check() { if (!$this -> check_email_dns() OR !$this -> check_email()) return FALSE; else return TRUE; } // debuging ONLY function debug_address() { if ($this -> debug == 1) { echo "
"; echo "DEBUG:"; echo "
"; echo "eMail: ".$this -> email; echo "
"; echo "DNS: ".$this -> check_DNS_result; echo "
"; echo "Syntax: ".$this -> check_MAIL_result ; echo "
"; } } } ?> email = "root@yahoo.com"; // REQUIRED --> address to check $check -> debug = 1; // OPTIONAL --> default is 0; values: 0 / 1 $check -> system_OS = "win"; // OPTIONAL --> default is WINDOWS; values: win / linux // USE: if($check -> final_mail_check()) ------------------ your action here --------; // USE example: if ($check -> final_mail_check()) echo "Email address IS VALID!"; else echo "The address is NOT VALID!"; $check -> debug_address(); // debuging purposes ?>