首先要了解sql语句 $sql="delete from `jb51` where id in (1,2,4)";
表单大概是：
<form action="" method="post">
<input name="id_dele[]" type="checkbox" id="id_dele[]" value="1"/>
<input name="id_dele[]" type="checkbox" id="id_dele[]" value="2"/>
<input name="id_dele[]" type="checkbox" id="id_dele[]" value="3"/>
<input name="id_dele[]" type="checkbox" id="id_dele[]" value="4"/>
<input type="submit"/>
</form>
php函数主要用到implode
$id_dele= implode(",",$_post['id_dele']);
$sql="delete from `user` where id in ($id_dele)";