ajax 提交数据获取的问题

Question

$.ajax({
type:"POST",
url:save.php,
timeout:30000,
data:$(form).serialize(),
success:function(data){
        
         }
       }）$(form).serialize()  =  " lotid=1&flag=save&smalllabel=0<_sel_times=1<_project_modes=1 "save.php 页面数据获取$lotid = $_POST['lotid'];
$flag = $_POST['lotid'];
$smalllabel = $_POST['smalllabel'];后面的 <_sel_times=1<_project_modes=1  这一段怎么获取啊？