Easiest way to make sure form is only submitted once?

[codeboy89]

I have a simple contact form, and a user could refresh and submit it several times, what is the best way to fix this with PHP?

[Stuie_b]

Sessions would be my choice, would allow you to prevent multiple submitions with very little code changes

 

stuie

[Jnerocorp]

yea basically Stuie_b said use sessions

 

 

<?php
session_start(); // This starts the Sessions

if(!isset($_SESSION['form'])) { // this checks if the session is set or not
$_SESSION['form'] = "done"; // This sets the session

// Place your form proccessing here

} else { // If the Form is filled do the followin below

echo "You have alredy Filled out the form"; // Displays the message if the form is already filled

}

?>