What I am trying to achieve
I am trying to update my database with values filled out in a form by the user.
I've spent a few months now with endless Google searches avoiding asking a question to StackOverflow, and every site has taught me a bit but I havent been able to finish this product.
The issue I am struggling with
On submission, the PDO::execute does not execute and database is not updated.
Previously I was receiving errors of "Undefined index" but those errors has been solved by passing the variables correctly. Now I am not getting any errors.
My question
What am I doing wrong? Considering I am not getting any errors in console or anywhere (and error_reporting is on). The if statement where I check if it has been executed, always gives nope so somewhere in the query it's failing.
Also how can I debug this better?
What I've tried (code's been minified to reveal relevant content)
index.php (displaying table with an Update button redirecting me to update.php)
<?php
session_start();
require 'assets/php/database.php';
require 'assets/php/usersession.php';
?>
<!DOCTYPE html>
<html>
<head>
<!-- irrelevant content -->
</head>
<body>
<?php
$sql = "SELECT * FROM utlansliste";
$stmt = $conn->prepare($sql);
$stmt->execute();
$result = $stmt->fetchAll();
?>
<table>
<thead>
<th>ID</th>
<th>Brukernavn</th>
<th>Datamaskin</th>
<th>Periferiutstyr</th>
<th>Start dato</th>
<th>Slutt dato</th>
<th>Oppdater tabell</th>
</thead>
<?php
foreach($result as $rows) {
?>
<tr>
<td><?php echo $rows['id']; ?></td>
<td><?php echo $rows['username']; ?></td>
<td><?php echo $rows['hostname']; ?></td>
<td><?php echo $rows['peripherals']; ?></td>
<td><?php echo $rows['start_date']; ?></td>
<td><?php echo $rows['end_date']; ?></td>
<td><a href="update.php?id=<?php echo $rows['id'];?>&hostname=<?php echo $rows['hostname'];?>"><div class="btn btn-primary">Oppdater</div></a></td>
</tr>
<?php
}
?>
</table>
</body>
</html>
update.php (where the user fills out the form and where the execution should happen)
<?php
session_start();
require 'assets/php/database.php';
require 'assets/php/usersession.php';
if(isset($_GET['id'])) {
$id = $_GET['id'];
$hostname = $_GET['hostname'];
global $conn;
$sql = "SELECT * FROM utlansliste WHERE id='$id';";
$stmt = $conn->prepare($sql);
$stmt->execute();
$row = $stmt->fetchAll();
$username = $row[0]['username'];
$peripherals = $row[0]['peripherals'];
$start_date = $row[0]['start_date'];
$end_date = $row[0]['end_date'];
if(isset($_POST['submit'])) {
try {
global $conn;
$sql = "UPDATE utlansliste SET username = ':username', peripherals = ':peripherals', start_date = ':start_date', end_date = ':end_date', WHERE id = ':id'";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":username", $username, PDO::PARAM_STR);
$stmt->bindParam(":peripherals", $peripherals, PDO::PARAM_STR);
$stmt->bindParam(":start_date", $start_date, PDO::PARAM_STR);
$stmt->bindParam(":end_date", $end_date, PDO::PARAM_STR);
$stmt->bindParam(":id", $id, PDO::PARAM_STR);
$stmt->execute();
if ($stmt->execute()) {
echo "gg";
} else {
echo "nope";
}
/*header('Location:index.php');*/
}
catch(PDOException $exception) {
echo "Error: " . $exception->getMessage();
}
}
}
?>
<html>
<head>
<!-- irrelevant content -->
</head>
<body>
<?php include 'assets/php/header.php' ?>
<?php if( !empty($user) ): ?>
<div class="content">
<strong>Oppdater utlånsliste for <?php echo $hostname; ?></strong>
<form name="form" method="POST" action="">
<div class="updatebox" style="text-align:center;">
<label for="username">Brukernavn</label>
<div><input type="text" name="username" value="<?php echo $username;?>" id="username" required/></div>
<label for="peripherals">Periferiutstyr</label>
<div><input type="text" name="peripherals" value="<?php echo $peripherals;?>" id="peripherals"/></div>
<label for="startdate">Låne fra - dato</label>
<div><input data-date-format="YYYY/MM/DD" type="date" name="start_date" value="<?php echo $start_date;?>" id="start_date" required/></div>
<label for="enddate">Låne til - dato</label>
<div><input data-date-format="YYYY/MM/DD" type="date" name="end_date" value="<?php echo $end_date;?>" id="end_date" required/></div>
<input name="id" type="hidden" id="id" value="<?php echo $id;?>"/>
<input name="hostname" type="hidden" value="<?php echo $hostname;?>" id="hostname"/>
<input type="submit" name="submit" value="Submit"/>
</div>
</form>
</div>
<body>
</html>
Additional comments
I've looked into many sites looking for a help and knowledge. These are a few of many more. I am mainly looking for knowledge to learn this secure method of updating a database, so even just a comment helps a ton!
