html - Get stuck on php if with captcha confirmation -


i have survey website have username , password , status. problem status use tell php can survey or not. have pass recaptcha test correct status (only people have status=1 can go). stuck tell error didn't complete recaptcha passed green ticks. have 5 columns on phpmyadmin id(a.i. primary key) , name , username , password , status.

here code

<?php require_once "condb.php"; // use connect phpmyadmin ?>  <?php if (isset($_post['btn_enter'])) {     $password = md5($_post['password']);     $username = $_post['username'];     $captcha=$_post['g-recaptcha-response'];  $response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=/*my_key*/&response=" .$captcha."&remoteip=".$_server['remote_addr']);     $obj = json_decode($response);     if($obj->success == true)     {         $sql="select * login username='$username' , password='$password' , status='1' limit 1";          $result=mysqli_query($cn,$sql) or die(mysqli_error($cn));         $num=mysqli_num_rows($result); # count row array          if ($num > 0)         {         $row = mysqli_fetch_array($result);         $_session['name']=$row['name'];         header('location:index.php');         }         elseif ($row['status']=2) {             echo "you admin.";         }elseif ($row['status']=3) {             echo "over power!";         }      }elseif($obj->success == false)     {         header('location:captcha.php');     }     else     {     header('location:error.php');     } } ?> 

here form code.

<form method="post">   <div align="center" class="row col-sm-12 col-md-12 col-lg-12 col-xs-12"   style="margin:0 auto;">   <input type="numeric" class="form-control input-lg" placeholder="username"   style="width:35%;height:50%" name="username" autofocus required><br>   <input type="password" class="form-control input-lg"    placeholder="password" style="width:35%;height:50%" name="password"    autofocus required><br> </div> <br><br><br><br><br><br>  <div class="g-recaptcha" data-sitekey="<!--my_key-->"></div> <br><br>  <button type="submit" class="btn btn-success btn-lg" name="btn_enter" style="height:50%;width:20%;">ตกลง</button> <br><br>  <p style="font-size:32px;color:#66ff33;"><         <span><a href="https://www.facebook.com"         class="btn btn-warning btn-lg glyphicon glyphicon-hand-right">         have problem? contact me</a></span></p> </form> 


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