POST的数据替空

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Release： 2016-06-13 12:57:09

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POST的数据为空
下面是我想实现的：
用户点击编辑之后利用ajax调用一个新的界面，然后编辑完之后单击提交POST到后台操作

但是发现post之后都是空数据，是什么原因呢？该怎么解决呢？
下面是我的编辑页代码

<?php <br />
session_start();<br>
include("../conn/conn.php");<br>
include("../inc/func.php");<br>
$pw_id=$_GET['pw_id'];<br>
$sql="SELECT `pw_id`,`k1`,`k2`,`k3`,year,`student_num`,`week_time`,`has_exam`,paee_work_theory.`remark`,`co_tid`,`verify`,`weeks`,paee_course.name FROM `paee_work_theory`,paee_course WHERE paee_course.pc_id=paee_work_theory.pc_id and pw_id='$pw_id' order by paee_work_theory.pw_id desc";<br>
$record=mysql_query($sql,$conn);<br>
$row=mysql_fetch_array($record);	<br>
header('Content-type:text/html;charset=GBK');<br>
?><br>

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