contact form in PHP

I have a contact form in PHP that gives me some errors.This is the code I use:

$message=$_POST["name"]."rn".$_POST["email"]."rn".$_POST["phone"]."rn".$_POST["subject"]."rn".$_POST["message"];

smtpmailer('ali_n_claudiu@yahoo.com', 'mailinteraction@gmail.com', 'Improve Mediehus Aarhus', 'From contact form', $message);

My problem is that when I load the page for the first time it gives me errors regarding the "$message=..." row for all the strings:

Notice: Undefined index: name in D:xampphtdocsinteractioncontact.php on line 56
Notice: Undefined index: email in D:xampphtdocsinteractioncontact.php on line 56 and same error for phone, subject and message.

after I submit the contact form, I don't receive anymore errors.

also when I load the page for the first time, it sends and empty e-mail to the desired address

last problem is that even if I use a javascript code for receiving a pop-up message after submiting the email, I don't receive any.

I read other posts and tried different ideas that you gave other people with similar errors, but without any result.

---

You should make use of the isset construct to check for variables before assigning.

if(isset($_POST["name"]))
{
$name = $_POST["name"];
}
else
{
echo "Name is not set";
}

You should do this for all if your other $_POST variables before passing it to your smtpmailer() .

---

Button Code

<input type="submit" name="submit">

and replace the code

if(isset($_POST['submit'])){

$message=$_POST["name"]."rn".$_POST["email"]."rn".$_POST["phone"]."rn".$_POST["subject"]."rn".$_POST["message"];

smtpmailer('ali_n_claudiu@yahoo.com', 'mailinteraction@gmail.com', 'Improve Mediehus Aarhus', 'From contact form', $message);

}

TO

$message=$_POST["name"]."rn".$_POST["email"]."rn".$_POST["phone"]."rn".$_POST["subject"]."rn".$_POST["message"];

smtpmailer('ali_n_claudiu@yahoo.com', 'mailinteraction@gmail.com', 'Improve Mediehus Aarhus', 'From contact form', $message);

---

Use isset as @Shankar Damodaran said or

Try this if you want hide notice and errors.

ini_set("display_errors","off"); //set it on if you want display errors

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