there is something I use with Ajax as well to check a form
PHP Code:
$err_msg = "";
//name
if(isset($_REQUEST['name'])){
$name = $_REQUEST['name'];
if($name == ""){
$err_msg = " <img src='images/exclamation.gif' /> name can not be empty!";
}else{
$_SESSION['name'] = $name;
$err_msg = " <img src='images/ok.gif' style='position:absolute;' />";
}
}
//check email
if(isset($_REQUEST['email'])){
$email = $_REQUEST['email'];
if(valid_email($email)){
$_SESSION['email'] = $email;
$err_msg = " <img src='images/ok.gif' style='position:absolute;' />";
}else{
$err_msg = " <img src='images/exclamation.gif' /> Either your email is not valid, domain doesn't exists or there is no valid MX host available";
}
}
function valid_email($email) {
if( (preg_match('/(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/', $email)) ||
(preg_match('/^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/',$email)) ) {
$host = explode('@', $email);
if (function_exists('checkdnsrr')) {
if(checkdnsrr($host[1].'.', 'MX') ) return true;
if(checkdnsrr($host[1].'.', 'A') ) return true;
if(checkdnsrr($host[1].'.', 'CNAME') ) return true;
}
return true;
}
return false;
}
if (!function_exists('checkdnsrr')) {
function checkdnsrr($host, $type = '') {
if(!empty($host)) {
if($type == '') $type = "MX";
@exec("nslookup -type=$type $host", $output);
while(list($k, $line) = each($output)) {
if(eregi("^$host", $line)) {
return true;
}
}
return false;
}
}
}
//end email
//check tel
if(isset($_REQUEST['tel'])){
$x_tel = false;
$tel = $_REQUEST['tel'];
if($tel == ""){
$err_msg = " <img src='images/exclamation.gif' /> Tel can not be empty!";
}elseif(!is_numeric(str_replace(" ","",$tel))){
$err_msg = " <img src='images/exclamation.gif' /> Tel can only be numbers!";
$x_tel = false;
}else{
$x_tel = true;
$_SESSION['tel'] = $tel;
$err_msg = " <img src='images/ok.gif' style='position:absolute;' />";
}
}
//message
if(isset($_REQUEST['message'])){
$message = $_REQUEST['message'];
if($message == ""){
$err_msg = " <img src='images/exclamation.gif' /> message can not be empty!";
}elseif(strlen($message) <= 10){
$err_msg = " <img src='images/exclamation.gif' /> message too short. min. 10 chars";
}else{
$message = str_replace("%0A","<br />",$message);//%0D
$message = str_replace("%0D","<br />",$message);//
$message = str_replace("%20"," ",$message);
$message = str_replace(chr(10),"<br />",$message);
$_SESSION['message'] = str_replace(chr(13),"<br />",$_SESSION['message']);
$err_msg = " <img src='images/ok.gif' style='position:absolute;' />";
}
}
//send email
if(isset($_REQUEST['send_email'])){
$get_mail_out = $_REQUEST['send_email'];
if($get_mail_out == "true"){
if(isset($_SESSION['name']) &&
isset($_SESSION['email']) &&
isset($_SESSION['tel']) &&
isset($_SESSION['message'])){
$from = "info@eire-webdesign.ie";
$bcc = "mail@eire-webdesign.ie";
$subject = ":: Contact from eire-webdesign";
$now = date("d/m/Y H:i:s");
$mime_boundary=md5(time());
# Common Headers
$headers = "MIME-Version: 1.0\r\n".
"Content-type: text/html; charset=iso-8859-1\r\n".
"From: \"Louie\" <".$from.">\r\n".
"To: \"".@$_SESSION['name']."\" <".@$_SESSION['email'].">\r\n".
"Date: ".date("r")."\r\n".
"Subject: ".$subject."\r\n";
$msg = "Name: ".$_SESSION['name']."<br />";
$msg .= "Email: ".$_SESSION['email']."<br />";
$msg .= "Tel: ".$_SESSION['tel']."<br />";
$msg .= "Message: ".$_SESSION['message']."<br />";
//send email out
ini_set(sendmail_from,'info@eire-webdesign.ie'); // the INI lines are to force the From Address to be used !
mail($_SESSION['email'], $subject, $msg, $headers);
$msg = "";
session_destroy();
$err_msg = "<span class='red'><img src='images/ok.gif' /> Email sent! Thank you.<br /></span>";
}else{
$err_msg = "<span class='red'>We have encounter an error sending your email.<br>
Please try again later!<br />
Click <a href='index.php?page=contact' title='go back'>« here</a> to go back.</span>";
}
}
}
echo $err_msg;//echo response.