title: Cannot modify header information - headers already sent by (output started at 22
body: <blockquote>
    <p>Warning: Cannot modify header information - headers already sent by
    (output started at
    E:\xampp\htdocs\kntl\panel\pages\um\um412_func_inc_v.03_add2.php:633)
    in E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 33</p>
    
    <p>Warning: Cannot modify header information - headers already sent by
    (output started at
    E:\xampp\htdocs\kntl\panel\pages\um\um412_func_inc_v.03_add2.php:633)
    in E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 34</p>
    
    <p>Warning: Cannot modify header information - headers already sent by
    (output started at
    E:\xampp\htdocs\kntl\panel\pages\um\um412_func_inc_v.03_add2.php:633)
    in E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 35</p>
    
    <p>Notice: Undefined index: ubkuser in
    E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 36</p>
    
    <p>Notice: Undefined index: ubklogin in
    E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 37</p>
    
    <p>Notice: Undefined index: ubktahun in
    E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 38 SMK NEGERI 25
    Warning: Cannot modify header information - headers already sent by
    (output started at
    E:\xampp\htdocs\kntl\panel\pages\um\um412_func_inc_v.03_add2.php:633)
    in E:\xampp\htdocs\kntl\panel\pages\ceklogin.php on line 49</p>
  </blockquote>
  
  <p>the code </p>
  
  <pre><code>&lt;?php
  if(isset($_POST['userz'], $_POST['passz'])) {
          include "../../config/server.php";
  
  
          require("../../config/fungsi_thn.php");     
  
  
      $libpath1="up/";
      $js_path="um/";
      $um_path="um/";
      $docroot="";
      $toroot="";
  
  
      include_once $um_path."um412_func_inc_v.03.php";
      include_once $um_path."um412_func_inc_v.03_add2.php";   
          $userz = mysql_real_escape_string($_REQUEST['userz']);
          $passz = mysql_real_escape_string($_REQUEST['passz']);
          $passz = md5($passz);
          $loginz = mysql_real_escape_string($_REQUEST['login']);
          if($loginz == "admin"){$peran = "1";} else {$peran="0";}
          $sq="select * from cbt_user where Username = '$userz' and Password = '$passz' and login = '$peran'";
          echo $sq;
          $hs=mysql_query($sq);
          $sqladmin = mysql_num_rows($hs);
       //exit;
          if($sqladmin&gt;0){
                      //if(!isset($_COOKIE['ubkuser'], $_COOKIE['ubklogin'])){
          $sqltahun = mysql_query("select * from cbt_setid where XStatus = '1'");
          $st = mysql_fetch_array($sqltahun);
          $tahunz = $st['XKodeAY'];
                          setcookie('ubkuser',$userz);
                          setcookie('ubklogin',$loginz);
                          setcookie('ubktahun',$tahunz);
                          $_COOKIE['ubkuser']==$userz;
                          $_COOKIE['ubklogin']==$loginz;
                          $_COOKIE['ubktahun']==$tahunz;      
  
                          //setting namauser
                          $namasek=carifield("select xsekolah from cbt_admin");
                          extractRecord($sq);
                          echo $Nama;
                          //exit;
                          if ($namasek!=$Nama) {
                              mysql_query("update cbt_admin set xsekolah='$Nama'");
                              //exit;
                          }
                          header("Location: ../pages/?");
                      //}
  
  
          } else { header("Location: login.php"); }
  } else {
  
      header("Location: login.php");
  
  }
  
  ?&gt;
  </code></pre>