In this tutorial on how to make an "Invite your freinds" Box just like the one on this site. To begin with you need to create a the form in which your users will

 <form name="FRIENDEMAIL" method="post" action="">

<strong>Your name:</strong>

<input name="name" type="text">

<label><br>

<strong>Emails:</strong>

<textarea name="email" cols="15" rows="3" id="email"></textarea>

</label>

<br>

<label>

<input type="submit" name="freind" value="Invite a freind!">

</label>

</form> 

Then you have the phpcode

if($_POST['freind']){

$emails = $_POST['email'];

$email = explode(",",$emails);

$emailcount = count($email);

$inviter = $_POST['name'];

$message = "YOUR MESSAGE HERE! ";

$i = 0;

while ($i < $emailcount){

$emailto = $email[$i]; 

mail("$emailto","YOURSITE Invites you!",$message , "From: [email protected] ");

$i = $i + 1;

}}

Firstly we need to split up the email addresses. We use the explode function to do this.

$email = explode(",",$emails);

Then we need to count how many variables are in the array. We use the count function for this.

[code]$message = "[b]YOUR MESSAGE HERE![b] ";[/code]

You will want to change the message that is send out. Now we are going to go the iteration (loop) so that the emails are sent.

$i = 0;

while ($i < $emailcount){

$emailto = $email[$i]; 

mail("$emailto","YOURSITE Invites you!",$message , "From: [email protected] ");

$i = $i + 1;

We start by setting the variable $i = 0 outside the loop and then the loop starts. Im using a while command to loop the emails sent out. The mail function is quite simple.

mail('to','Subject','Message','Additional headers');

Thats about it

Arutha