PHP Approval/Deny help

[Robin H]

Notice I changed your checkbox.
I added name=" and value=""

I'm fairly tired atm and can't focus. So could be entirely wrong

<?php
if($_GET['do'] == 'submit' && !empty($_POST['id'])){
  foreach($_POST['id'] as $ID){
    if(!is_numeric($ID)){
      echo ' Whaaaat, the ID '.$ID.' isn\'t a number? ';
      exit;
   }
   mysql_query('UPDATE `images` SET `approved` = "true" WHERE `id` = '.$ID);
  }
}else{
  // Show form
  $picture = mysql_query("SELECT path, id FROM images WHERE approved='false'"); 
  echo "<form action='approve.php?do=submit' method='post'>" ;
  while($result = mysql_fetch_array($picture)){ 
   echo "<img src='../".$result['path']."'>"; 
   echo '<input type="checkbox" name="id[]" value="'.$result['id'].'" id="'.$result['id'].'" />';
  } 
  echo "</form>";
}
?>