Stop form from sending twice?

@GreyfishMay 10.2008

What is the best way to stop a contact form from sending information twice if the user refreshes the page?

to post a comment

@YelgnidrocMay 10.2008 — #Try having a session variable $_SESSION['already_submitted']

Set it to TRUE after processing the form.

Only process the form if it's not TRUE

@apulmca2k4May 10.2008 — #Redirect at another thanks page after processing data of form.

@GreyfishauthorMay 10.2008 — #If don't like sending them to a page thats sole purpose is to say "Thankyou" I'd rather just keep it all on one page.

I can't figure out how to get this session variable thing to work, what is wrong with this?

[code=php]session_start();
 $_SESSION['sent'] = "false";
 
 if (isset($_POST["submit"])){
 if ($_SESSION['sent'] == "false"){
 $name = $_POST["name"];
 $email = $_POST["email"];
 $to = "[email protected]";
 $subject = $_POST["subject"];
 $message = $_POST["message"];
 $body = "Full Name: $namen".
 "E-mail Address: $emailn".
 "Message: $message";
 $header = "From: $email";
 mail($to, $subject, $body, $header);
 $_SESSION['sent'] = "true";
 }
 }[/code]

@YelgnidrocMay 10.2008 — #You are always setting $_SESSION['sent'] = "false";

May be better to do something like:

[code=php]
 if(!isset($_SESSION['sent'])) 
 $_SESSION['sent'] = "false";
 
 
 if (isset($_POST["submit"])){
 if ($_SESSION['sent'] == "false"){
 $name = $_POST["name"];
 $email = $_POST["email"];
 $to = "[email protected]";
 $subject = $_POST["subject"];
 $message = $_POST["message"];
 $body = "Full Name: $namen".
 "E-mail Address: $emailn".
 "Message: $message";
 $header = "From: $email";
 mail($to, $subject, $body, $header);
 $_SESSION['sent'] = "true";
 }
 } 
 
 [/code]

Stop form from sending twice?

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Stop form from sending twice?

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