php image checkbox deleter - php

Question

I am having trouble making a image deleter in php i do not know what is wrong
PHP:
<?php if (isset($_POST['dcheck'])) {
$img_dir = "Uploads/";
$image = $_POST['dcheck'];
mysql_query("DELETE FROM Photos WHERE PhotoNumber = '".$image."'") or die(mysql_error());
echo 'The image(s) have been successfully deleted.';
} else{
echo 'ERROR: unable to delete image file(s)!';
}
?>
HTML:
<form action="Admin3.php" method="post">
<?php
while($check = mysql_fetch_array($query2)){
echo '<img class="images2" src= "/PhotographyMML/Uploads/resized' . $check['PhotoName'] . $check['PhotoType'] . '" height="100" width ="100" ><input type="checkbox" name="dcheck[]" value="'. $check['PhotoNumber'] .'" />';
}
?>
<input type="submit" value="Delete Image(s)" />
</form>

Answer 1

Your dcheck variable is an array. You will want to create an outer loop around the existing query code you have and foreach through the array, deleting each time.
<?php if (isset($_POST['dcheck'])) {
$img_dir = "Uploads/";
foreach ($_POST['dcheck'] as $image) {
mysql_query("DELETE FROM Photos WHERE PhotoNumber = '".$image."'") or die(mysql_error());
echo 'The image(s) have been successfully deleted.';
} else{
echo 'ERROR: unable to delete image file(s)!';
}
}
?>
A small optimization would be to alter the query so it uses WHERE A small optimization would be to alter your delete query so that it uses WHERE PhotoNUmber IN (1, 2 ...).
This would cause your deletion to happen in one query rather than N queries.
What seems to be missing is any code to actually remove the original file you're alluding to. That would require some sort of file deletion function typically utilizing http://php.net/manual/en/function.unlink.php