About PHP using Curl to simulate login to the academic network of the relevant issues

About PHP using Curl to simulate login to the educational network
The system is used for queries, students can check their scores by replying to the number + password.

background:
Educational System: The educational system of the square (http://jwxt.tjtc.edu.cn/)
I found an entry without a verification code: http://jwxt.tjtc.edu.cn/default3.aspx

Now you need to log in through this portal to get student results.

The following code is now available:
This code basically can be simulated login to get students ' grades, schedules and so on.
But the content obtained through the test is null how can i solve it? Did something go wrong?

zfapi.php

 function Get_td_array ($table) {
$table = Preg_replace ("'
 
  ]*?> ' si ', ' ", $table);
  
$table = Preg_replace ("'
  
   ]*?> ' si ', ' ", $table);
   
$table = Preg_replace ("'
   
    ]*?> ' si ', ' ", $table);
    
$table = Str_replace (""," {tr} ", $table);
    
$table = Str_replace (""," {td} ", $table);
    
Remove HTML Tags
    
$table = Preg_replace ("' <[/!") *? [^<>]*?> ' si ', ' ", $table);
    
Remove whitespace characters
    
$table = Preg_replace ("' ([RN]) [s]+ '", "", $table);
    
$table = Preg_replace ('//', "", $table);
    
$table = Str_replace ("", "" ", $table);
    
$table = Str_replace ("", "" ", $table);
    
           
    
$table = Explode (' {tr} ', $table);
    
Array_pop ($table);
    
foreach ($table as $key = = $tr) {
    
$TD = Explode (' {TD} ', $TR);
    
Array_pop ($TD);
    
$TD _array[] = $TD;
    
}
    
return $TD _array;
    
}
    
Class Simulatedlogin {
    
private $username;//School Number
    
private $password;//password
    
private $name;//Name
    
private $operate;//operation
    
Public $message = ';//return information
    
Public $url = ' http://jwxt.tjtc.edu.cn/';//Educational Network address
    

    
Public function __construct ($username, $password, $operate) {
    
$this->username = $username;
    
$this->password = $password;
    
$this->operate = $operate;
    
Log in first to facilitate the subsequent acquisition of data (as if there is a problem here)
    
$this->simulated ($this->url. ' Default3.aspx ', TRUE, ' __viewstate=%2fwepdwukmtg5njy5mdm3owrksvppsotlv5y% 2buno7w2yge4y1bpi%3d&textbox1= '. $this->username. ' &textbox2= '. $this->password. ' &button1= ');
    
$this->getname ();
    
}
    

    
Public Function Returnjson () {
    
Switch ($this->operate) {
    
Case ' Xinxi '://Personal Information inquiry
    
$this->prifile ();
    
Break
    
Case ' Dengji '://Grade Test query
    
$this->getdjks ();
    
Break
    
Case ' Chengji '://Score Query
    
$this->getchengji ();
    
Break
    
Case ' Kebiao '://Timetable Query
    
$this->getkb ();
    
Break
    
Case ' Bukao '://Retake Query
    
$this->getbukao ();
    
Break
    
}
    
return $this->message;
    
}
    

    
/**
    
* Access to personal information
    
*/
    
Private Function Prifile () {
    
$result = $this->simulated ($this->url. ' xsgrxx.aspx?xh= '. $this->username. ' &xm= '. $this->name. ' &gnmkdm=n121501 ');
    
Preg_match_all ('///', $result, $dataHeader);//1,0
    
Preg_match_all ('/
    (. *) <\/span>/', $result, $dataValue);//2
$dataValue 1= Array (' ID ' =>strip_tags ($dataValue [0][1]), ' name ' =>strip_tags ($dataValue [0][8]), ' cid ' = Strip_tags ($dataValue [0][46]), ' XI ' =>strip_tags ($dataValue [0][54]), ' Zhuan ' =>strip_tags ($dataValue [0][64]) );
$this->message = $dataValue 1;
}

Private Function getKB () {//timetable
$result = $this->simulated ($this->url. ' xskbcx.aspx?xh= '. $this->username. ' &xm= '. $this->name. ' &gnmkdm=n121603 ');
Preg_match_all ('/













     
 
  
      ]*> ([\s\s]*?)   <\/table>/', $result, $rs);   $arr = Get_td_array ($rs [0][0]); for ($d =1; $d <=7; $d + +) {$shuzu [$d][1]= $arr [1][$d]; $shuzu [$d][2]= $arr [2][$d +1]; $shuzu [$d][3]= $arr [3][$d]; $shuzu [$d] [4]= $arr [4][$d]; $shuzu [$d][5]= $arr [5][$d]; $shuzu [$d][6]= $arr [6][$d]; $shuzu [$d][7]= $arr [7][$d]; $shuzu [$d][8]=$
arr[8][$d]; $shuzu [$d][9]= $arr [9][$d]; $shuzu [$d][10]= $arr [10][$d]; $shuzu [$d][11]= $arr [11][$d];