email - Mail function is not working in PHP

if (isset($_POST['submit']))
{
    //if "email" is filled out, proceed

    $name=  mysql_real_escape_string($_POST['name']);
    $phone=  mysql_real_escape_string($_POST['phone']);

    $to = "admin@gmail.com";
    $subject = "Customer Intrested";
    $message = "Buyer Information and Intrested in land.";

    $message.= "Customer Name :".$name."\n";
    $message.= "Customer Phone :".$phone."\n";  

    $mail=mail($to, "Subject: $subject",$message );
    if($mail){
        echo "success";
    } else {
        echo "failed."; 
    }
?>

I am using the above code to send email..but i am unable to get the result..it always showing the "Thank you message"..

I can able to get the values of name and phone.

How to fix this Problem?

Answer

mail($to, "Subject: $subject",$message );
echo "Thank you for using our mail form";

instead of this ,first check if the mail is sent

$mail=mail($to, "Subject: $subject",$message );
if($mail){
  echo "Thank you for using our mail form";
}else{
  echo "Mail sending failed."; 
}

By this actually u can know whether your mail function in working or not

if it is not working.the problem can be with SMTP settings in your localhost

enable errors in php if not enabled using

ini_set('display_errors',1);