PHP show data in checkbox - php

Question

How do I go about showing checkboxes that are in the jokecategory table as being selected, and those that arent to be shown but not checked. This is what I currently have:
<div class="control-group">
<?php
$sql = 'SELECT jokecategory.joke_id, jokecategory.category_id, category.name
FROM jokecategory
INNER JOIN category ON category.id = jokecategory.category_id
WHERE joke_id= :joke_id';
$stmt = $dbConnection->prepare($sql);
$stmt->bindValue(':joke_id', $id);
$stmt->execute();
?>
<fieldset>
<legend class="control-label">Categories:</legend>
<?php foreach ($stmt as $row) { ?>
<div class="controls">
<label for="category<?php echo($row['category_id']);?>">
<input type="checkbox" id="category<?php echo $row['category_id']; ?>" name="checkbox[]" value="<?php echo $row['category_id']; ?>" checked>
<?php echo($row['name']); ?></label>
</div>
<?php } ?>
with (data within the category table):
<?php $sql = 'SELECT id, name FROM category';
foreach ($dbConnection->query($sql) as $data) { ?>
<div class="controls">
<label for="category<?php echo($data['id']);?>">
<input type="checkbox" name="categories[]" id="category<?php echo($data['id']); ?>" value="<?php echo($data['id']);
?>">
<?php echo($data['name']); ?></label>
</div>
<?php } ?>
</fieldset>
</div>
Its in two segments at the moment as I was not sure on how to show the output the data into one merged group. so it goes like:
Joke id: xxxxx
joke_text: xxxxxx
author_name: xxxxx
categories
1: [x]
2: [x]
3: [ ]
4: [ ]

Answer 1

I am not sure, but - is $data["category_id"] really an array? If so, you could use the keypair in that array like this:
<?php foreach ($data['category_id'] as $id => $checkbox) { ?>
<input type="checkbox" id="<?php echo $id; ?>" name="checkbox[]" />
<?php } ?>

Answer 2

probably it would be like below check your sql query and add category name to fetch and display eg. category_name used below
and make some changes as below
<fieldset>
<legend class="control-label">Categories:</legend>
<?php foreach ($data as $checkbox) { ?>
<div class="controls">
<label for="category<?php echo($checkbox['category_id']); ?>">
<input type="checkbox" name="categories[]" id="chk_category<?php echo($checkbox['category_id']); ?>" value="<?php echo($checkbox['category_id']); ?>">
<?php echo($checkbox['category_name']); ?></label>
</div>
<?php } ?>
</fieldset>

Answer 3

I am not sure that I completely understand the question, but have you tried
foreach ($data['category_id'] as $id => $checkbox)