sql update not executing - php

Question

Apologies if there is another feed with this same problem, I have tried different suggested solutions but I still get an error, and I cant see why!
I want to update a row in my table using a html form. I have populated the form with the existing values, and want to be able to edit those and update them when the form is submitted, but I am getting this error:
Fatal error: Uncaught exception 'PDOException' with message
'SQLSTATE[HY093]: Invalid parameter number: parameter was not defined'
in
/Applications/XAMPP/xamppfiles/htdocs/love-deals/admin/update_offer.php:46
Stack trace: #0
/Applications/XAMPP/xamppfiles/htdocs/love-deals/admin/update_offer.php(46):
PDOStatement->execute(Array) #1 {main} thrown in
/Applications/XAMPP/xamppfiles/htdocs/love-deals/admin/update_offer.php
on line 46
Here is the php / sql code:
if(isset($_POST['update'])) {
$updateTitle = trim($_POST['title']);
$updateDesc = trim($_POST['desc']);
$updateRedeem = trim($_POST['redeem']);
$updateStart = trim($_POST['start']);
$updateExpiry = trim($_POST['expiry']);
$updateCode = trim($_POST['code']);
$updateTerms = trim($_POST['terms']);
$updateImage = trim($_POST['image']);
$updateUrl = trim($_POST['url']);
$updateSql = 'UPDATE codes SET (title,description,redemption,start,expiry,textcode,terms,image,url) = (:title,:description,:redeem,:start,:exp,:code,:terms,:image,:url) WHERE id=:offerid';
$update = $db->prepare($updateSql);
$update->execute(array(':title'=>$updateTitle,':description'=>$updateDesc,':redeem'=>$updateRedeem,':start'=>$updateStart,':exp'=>$updateExpiry,':code'=>$updateCode,':terms'=>$updateTerms,':image'=>$updateImage,':url'=>$updateUrl,':id'=>$offerID));
}
and the html form:
<form id="update_offer" class="col-md-6 col-md-offset-3" method="post" action="update_offer.php?id=<?php echo $offerID; ?>">
<div class="form-group col-md-12">
<label class="col-md-12" for="title">Title</label>
<input id="title" class="form-control col-md-12" type="text" name="title" placeholder="Offer Title" value="<?php echo $title; ?>" required>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="desc">Description</label>
<textarea id="desc" class="form-control col-md-12" name="desc" placeholder="Description" value="<?php echo $desc; ?>"></textarea>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="redeem">Redemption</label>
<input id="redeem" class="form-control col-md-12" type="text" name="redeem" placeholder="Where to redeem" value="<?php echo $redeem; ?>" required>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="start">Start Date</label>
<input id="start" class="form-control col-md-12" type="date" name="start" value="<?php echo $startDate->format('Y-m-d'); ?>" min="<?php echo date('Y-m-d') ?>" max="2021-12-31" required>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="expiry">Expiry Date</label>
<input id="expiry" class="form-control col-md-12" type="date" name="expiry" value="<?php echo $expDate->format('Y-m-d'); ?>" min="<?php echo date('Y-m-d') ?>" max="2021-12-31" required>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="code">Code</label>
<input id="code" class="form-control col-md-12" type="text" name="code" placeholder="Code (if applicable)" value="<?php echo $code; ?>">
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="terms">Terms</label>
<textarea id="terms" class="form-control col-md-12" name="terms" placeholder="Terms & Conditions" value="<?php echo $terms; ?>" required></textarea>
</div>
<div class="form-group col-md-12">
<label class="col-md-12" for="url">Offer URL</label>
<input id="url" class="form-control col-md-12" type="text" name="url" placeholder="Offer URL (if applicable)" value="<?php echo $url; ?>">
</div>
<div class="form-group col-md-12">
<label class="col-md-8" for="image">Image <img src="../images/offers/<?php echo $image; ?>" alt="" style="width: 200px;" /></label>
<input id="image" class="form-control col-md-4" type="file" name="image">
</div>
<div class="form-group col-md-12 pull-right">
<button id="update" type="submit" name="update" class="btn btn-primary"><i class="glyphicon glyphicon-refresh"></i> Update</button>
</div>
</form>
what am i doing wrong?! Im still learning php etc, so please be gentle, any help is much appreciated.

Answer 1

First, you have wrong syntax for update statement, as other guys mentioned already, change:
UPDATE codes SET (title,description,redemption,start,expiry,textcode,terms,image,url) = (:title,:description,:redeem,:start,:exp,:code,:terms,:image,:url) WHERE id=:offerid
Into
UPDATE `codes`
SET `title` = :title,
`description` = :description,
`redemption` = :redeem,
`start` = :start
`expiry` = :expiry
`textcode` = :code
`terms` = :terms
`image` = :image
`url` = :url
WHERE `id` = :offerid
Learn more about the SQL Update syntax here.
Then, one thing more you have a mistake in execute(). Change your :id into :offerid like below:
$update->execute(array(
':title' => $updateTitle,
':description' => $updateDesc,
':redeem' => $updateRedeem,
':start' => $updateStart,
':exp' => $updateExpiry,
':code' => $updateCode,
':terms' => $updateTerms,
':image' => $updateImage,
':url' => $updateUrl,
':offerid' => $offerID
));

Answer 2

You are using wrong syntax of Update
It would be
$updateSql = "UPDATE codes SET title =:title,
description =:description,
redemption =:redeem,
start =:start,
expiry =:exp,
textcode =:code,
terms :=terms,image =:image,
url =:url
WHERE id=:id";// write id instead of offset because you are binding ':id'=>$offerID
Check http://dev.mysql.com/doc/refman/5.7/en/update.html

Answer 3

thanks for your replies. My original update syntax was actually as you mentioned, I had changed it when looking through some other solutions, and not changed it back, but either way, even with correct syntax, I still got the same error.
Looking through your replies, I can see that I have ':id'=> $offerID but have used :offerid in the sql code, which obviously needs to be updated, so thanks for pointing that out! Hopefully that will fix the problem...