PHP 批量操作删除，支持单个删除

PHP  执行部分：

 <?php
 include('checkadmin.php');
 header('Content-Type: text/html; charset=utf-8');
 if($_POST['btnSave']){

     if(empty($_POST['id'])){
             echo"<script>alert('必须选择一个产品,才可以删除!');history.back(-1);</script>";
             exit;
         }else{
         /*如果要获取全部数值则使用下面代码*/

         $id= implode(",",$_POST['id']);
         $str="DELETE FROM `product` where id in ($id)";
         mysql_query($str);
         echo "<script>alert('删除成功！');window.location.href='product_list.php';</script>";
     }
 }
 ?>

HTML 页面部分：

<form id="form2" name="form2" method="post" action="del_product.php">
    <label>
        <input type="checkbox" name="id[]" value="1" style="background:none; border:none;" />
            1
    </label>
    <label>
        <input type="checkbox" name="id[]" value="2" style="background:none; border:none;" />
            2
    </label>
    <label>
        <input type="checkbox" name="id[]" value="3" style="background:none; border:none;" />
            3
    </label>
    <label>
        <input type="checkbox" name="id[]" value="4" style="background:none; border:none;" />
            4
    </label>
    <label>
        <input type="checkbox" name="id[]" value="5" style="background:none; border:none;" />
            5
    </label>
    <div style="padding-left:20px;">
        <input type="button" value="全选" style="background:url(images/cheall.jpg) no-repeat; width:60px; height:23px; border:none;" onClick="selectBox('all')"/>
        <input type="button" value="反选" style="background:url(images/cheall.jpg) no-repeat; width:60px; height:23px; border:none;" onClick="selectBox('reverse')"/>
        <input type="submit" name="btnSave" style="background:url(images/cheall.jpg) no-repeat; width:60px; height:23px; border:none;" value="删除"/>
    </div>
</form>

JS判断部分：

<script type="text/javascript" language="javascript">
  function selectBox(selectType){
  var checkboxis = document.getElementsByName("id[]");
  if(selectType == "reverse"){
      for (var i=0; i<checkboxis.length; i++){
          //alert(checkboxis[i].checked);
          checkboxis[i].checked = !checkboxis[i].checked;
      }
  }
  else if(selectType == "all")
  {
      for (var i=0; i<checkboxis.length; i++){
          //alert(checkboxis[i].checked);
          checkboxis[i].checked = true;
      }
  }
}
</script>