Time for action – deleting data

Actions normally come with some data posted. In the case of the delete action, this data is a list of items that need to be deleted. Let's look at this action with regards to the enhanced information data:

function form_delete() {
    /* loop through each of the selected tasks and delete them */
   while (list($var,$val) = each($_POST)) {
       // Check $var for the number part and store the number in 
       // the matches array
      if (ereg("^chk_([0-9]+)$", $var, $matches)) {
         /* ================= input validation =============== */
         input_validate_input_number($matches[1]);
         /* ================================================== */
            db_execute("
              DELETE FROM 
                `plugin_cbEnhancedInfo_dataTable` 
              WHERE
                `Id`='" . $matches[1] . "'"
            );
        }
   }
    // when done, redirect the end-user to the listing page
    header("Location: cbEnhancedInfo_listInformation...