พี่ครับรบกวนช่วยดูให้ที่ครับ ว่าทำไมมันเก็บข้อมูลลงในดาต้าเบส กำ งง มากรบกวนผู้รู้บอกผมที่

    function jipisai1()
    {
        intel.xdk.device.getRemoteData(
        "http://www.dedpu.com/ae/week_confime.php",
        "POST",
        "",
        "Week_jipisai",
        "error_handler");
    }
    function Week_jipisai(data)
    {
        console.log(data);
       str = '<ul class="list" data-appbuilder-object="list">';
          var members = JSON.parse(data);
           members.forEach(function(user) {
          str += '<li><a href=#page_7 onClick="jipisai_student_week(' + user.setting_id + ')"> ปีการศึกษา:' + user.year+ 'เทอมการศึกษา:'+user.term+'</a></li>';
                           
         });
                                    
         str += '</ul>';     
         console.log(str);
                        
     document.getElementById("year_term").innerHTML= str; 
    }
    
     function jipisai_student_week(setting_id)
        {
            intel.xdk.cache.setCookie("SETTING_ID",setting_id,-1);
            //alert('setting_id'+setting_id);
            //setting = setting_id;
             var str = "SETTING_ID="+setting_id + "&" + "TEACHER_ID=" + intel.xdk.cache.getCookie("cklogin");
            alert('แสดงข้อมูล'+str);
               intel.xdk.device.getRemoteData(
        		    "http://www.dedpu.com/ae/student_jipisai.php",
        			"POST",
        		    str,
        		    "success_student_id_jipisai",
        		    "error_handler");
            
        		}
        
                function success_student_id_jipisai(data) 
        		{ 
                    
        		   // console.log('setting: '+setting);
                    console.log(data);
                    
                    str = '<ul class="list" data-appbuilder-object="list">';
                    var members = JSON.parse(data);
                    members.forEach(function(assing) {
                       str += '<li><a href=#studentjipaisai onClick="point_student(' + assing.student_id + ')"> ชือ:' + assing.name_s+ 'นามสกุล:'+assing.lastname+'</a></li>';
                  
                  
                  
                 
                    });
                      str += '</ul>';
                    console.log(str);
                  
                    document.getElementById("year_term").innerHTML= str; 
                
                           
        		}
    
    
    
    function point_student(student_id)
    {
      
  intel.xdk.cache.setCookie("STUDENT_ID",student_id,-1);
             
                 var str =  "student_id=" + intel.xdk.cache.getCookie("STUDENT_ID");
                alert('แสดงข้อมูล'+str);
            

                 intel.xdk.device.getRemoteData(
                     "http://www.dedpu.com/ae/EditjipaisaiM.php",
                     "POST",
                     str,
                     "success_Time2",
                     "error_handler");
                 console.log(str);
            }
            function success_Time2(data)
            {
                   console.log('ch_ex: '+data);
                 str = '<ul class="list" data-appbuilder-object="list">';
                 var members = JSON.parse(data); 
                 members.forEach(function (assing) {
        //alert("work_id:" + user.work_id);
                     str += '<li><font size="5">ชื่อ</font><br>:'+ assing.teacher_id + '<br>นักศึกษาที่ขอ:'+assing.student_id+'<br>วันที่ให้:'+assing.date+'<br><font size="5">วันเวลา:</font><br> ' + assing.year + '</li>';
                    
                str += '  <input type="text" style="float:left;" id="ZXO" value="name">';
                   str += '<center><a class="btn btn-success" onclick="deitpoint('+ assing.student_id +');" style="" data-appbuilder-object="button" data-transition="slide" id="">ขอเวลานี้ </></center>';
              });


          str += '</ul>';
                    
         console.log(str);
        
         document.getElementById("year_term").innerHTML = str;
    }
    
    
    
    function deitpoint(student_id) {
     //   console.log('setting answer: '+setting_id);
           // intel.xdk.cache.setCookie("TIME_ID",time_id,-1);
         var str = "STUDENT_ID=" + intel.xdk.cache.getCookie("cklogin")+"&"+"POINT_PS2="+ document.getElementById("ZXO").value;
         console.log(str);
         intel.xdk.device.getRemoteData(
             "http://www.dedpu.com/ae/point_student_deit.php", 
             "POST",
             str,
             "set_has_time",
             "error_handler");
        
     }
      function set_has_time(data) {
       console.log(data);

        

         //st += '</div>';
        
          
         document.getElementById("user_answer").innerHTML = ''+data;

     }
    

<?php
$con=mysqli_connect("mysql.hostinger.in.th","www","xxx","zzz");
if (mysqli_connect_errno($con))
{
  echo "Failed to connect to MySQL: " . mysqli_connect_error(" ");
}
	



$point_ps21=$_POST["POINT_PS2"];
$student_id=$_POST["student_id"];		
$result = mysqli_query($con,"UPDATE asssingPoint SET point_ps21=$point_ps2 WHERE student_id='$student_id'"); 
	
$arr=array();
if($result)
{
echo $point_ps2 . " " .$status ." ".$teacher_id;
}else echo 'kaaaaa';

mysqli_close($con);	
?>