Unable to disable checkbox - php

Question

My problem here is that my checkbox will only be disabled when all the checkboxs status is 0. But here, i only want the selected checkbox be disabled, but when the status of checkboxs is not all set to 0, it will not be disabled.
Here is my code:
<?php
$username = $_SESSION['username'];
$query = "SELECT * FROM box WHERE status = 1";
$result = #mysqli_query($con, $query);
$num_rows = #mysqli_num_rows($result);
$disable = '';
if (!$num_rows) {
$disable = 'disabled="disabled"';
}
?>
<form method = "post" action = "">
<input type='checkbox' name="boxs[]" id="1.1" value ="1.1" <?php echo $disable ?>/>
<label for="1.1" class="background1"></label> <br/>
<input type='checkbox' name="boxs[]" id="1.2" value ="1.2"<?php echo $disable ?>/>
<label for="1.2" class="background2"></label>
<br/>
<input type='checkbox' name="boxs[]" id="1.3" value ="1.3"<?php echo $disable ?>/>
<label for="1.3" class="background2"></label>
<input type="submit" name="Next" id="Next" value="next" />
</form>
<?php
if(isset($_POST['Next'])) {
foreach($_POST['boxs'] as $f) {
$sql = "UPDATE box SET status = '0' WHERE boxid = '$f'";
mysqli_query($con,$sql) or die(mysqli_error($con));
$result = "INSERT INTO booked(username, boxid) VALUES('$username', '$f')";
mysqli_query($con,$result) or die(mysqli_error($con));
}
}
?>
So, what is wrong with my code?

Answer 1

<?php $username = $_SESSION['username'];?>
<form method = "post" action = "">
<?php
$username = $_SESSION['username'];
$query = "SELECT * FROM box WHERE boxid=1.1 AND status = 1";
$result = #mysqli_query($con, $query);
$num_rows = #mysqli_num_rows($result);
$disable = '';
if (!$num_rows){
$disable = 'disabled="disabled"';
}
?>
<input type='checkbox' name="boxs[]" id="1.1" value ="1.1" <?php echo $disable ?>/>
<label for="1.1" class="background1"></label> <br/>
<?php
$query = "SELECT * FROM box WHERE boxid=1.2 AND status = 1";
$result = #mysqli_query($con, $query);
$num_rows = #mysqli_num_rows($result);
$disable = '';
if (!$num_rows){
$disable = 'disabled="disabled"';
}
?>
<input type='checkbox' name="boxs[]" id="1.2" value ="1.2"<?php echo $disable ?>/>
<label for="1.2" class="background2"></label>
<br/>
<?php
$query = "SELECT * FROM box WHERE boxid=1.3 AND status = 1";
$result = #mysqli_query($con, $query);
$num_rows = #mysqli_num_rows($result);
$disable = '';
if (!$num_rows){
$disable = 'disabled="disabled"';
}
?>
<input type='checkbox' name="boxs[]" id="1.3" value ="1.3"<?php echo $disable ?>/>
<label for="1.3" class="background2"></label>
<input type="submit" name="Next" id="Next" value="next" />
</form>
<?php
if(isset($_POST['Next']))
{
foreach($_POST['boxs'] as $f){
$sql = "UPDATE box SET status = '0' WHERE boxid = '$f'";
mysqli_query($con,$sql) or die(mysqli_error($con));
$result = "INSERT INTO booked(username, boxid) VALUES('$username', '$f')";
mysqli_query($con,$result) or die(mysqli_error($con));
}
}
?>

Answer 2

I don't know the your exact requirement but; Your solutions may be
<?php $username = $_SESSION['username']; ?>
<form method = "post" action = "">
<?php
$username = $_SESSION['username'];
$query = "SELECT * FROM box";
$result = #mysqli_query($con, $query);
$i=1;
while ($raw = $result->fetch_assoc()) {
if ($raw['status'] == 1) {
$disable = 'disabled="disabled"';
} else {
$disable = '';
}
echo "<input type='checkbox' name='boxs[]' id='" . $raw['boxid'] . "' value ='" . $raw['boxid'] . "' $disable/>";
echo " <label for='" . $raw['boxid'] . "' class='background$i'></label> <br/>";
$i++;
}
?>
</form>