PHP Insert Into function only working once? - php

Question

I'm trying to write some PHP code that adds data submitted via a form into a database table I have created. It works great - once. Once I have submitted data and added it to the database via the form once already it will no longer work. I'm thinking it's a problem with the function I have written as when using var_dump(); on the variables I'm submitting in the form they all come out fine.
I'd appreciate any suggestions you guys might have, thanks!
<form action="" method="post">
<label for="habbo_name"><center><b>Habbo Name:</b></label><br >
<input type="text" name="habbo_name" size="30">
<b><center>Transfer Status:<br ><select name="transfer_status">
<option value="Stage Five">Stage Four - Rejected</option>
<option value="Stage Four">Stage Four - Accepted</option>
<option value="Stage Three">Stage Three</option>
<option value="Stage Two">Stage Two</option>
<option value="Stage One" selected="selected">Stage One</option>
</select>
<label for="date"><center><b>Date:</b></label><br >
<input type="text" name="date" size="30"><br />
<input type="Submit"><br /><br />
</form>
Go back
<?php
if (empty($_POST) === false) {
$habbo_name = $_POST['habbo_name'];
$transfer_status = $_POST['transfer_status'];
$date = $_POST['date'];
add_transfer($habbo_name, $transfer_status, $date);
header('Location: moderate.php');
exit();
}
?>
Function:
function add_transfer($habbo_name, $transfer_status, $date) {
global $con;
$query = "INSERT INTO `transfers` SET `habbo_name`='$habbo_name', `transfer_status`='$transfer_status', `date`='$date'";
$update = $con->prepare($query);
$update->execute();
}

Answer 1

You have syntax error in insert query, use it like below
$query = "INSERT INTO `transfers` (`habbo_name`,`transfer_status`,`date`) VALUES ('$habbo_name', '$transfer_status', '$date')";