php - Admin login to user accounts -


i have pretty simple login script expect , checks match in database between email , password combination. although wondering if there way edit script administrator use users email such:

user@hotmail.com

and master password or something:

master123

to access account on system? here current script:

<? session_start();     require_once("system/db.php");      if($_post['submit']){      $email_address = $conn->real_escape_string($_post['email_address']);     $password = md5($_post['password']);     $stay_logged_in = $_post['stay_logged_in'];    if (empty($email_address) === true || empty($password) === true) {      header('location: login.php?loginerror=3');      } else {      $sql1 = "select * ap_users email_address = '{$email_address}' limit 1";     $result1 = $conn->query($sql1);     if (!$result1->num_rows == 1) {         header('location: login.php?loginerror=4');     } else {       $sql2 = "select * ap_users email_address = '{$email_address}' , blocked='0' limit 1";     $result2 = $conn->query($sql2);     if (!$result2->num_rows == 1) {         header('location: login.php?loginerror=6');     } else {       $sql = "select * ap_users email_address = '{$email_address}' , password = '{$password}' limit 1";     $result = $conn->query($sql);     if (!$result->num_rows == 1) {         header('location: login.php?loginerror=2');     } else {          mysqli_query($conn, "update ap_users set last_login = now() email_address = '{$email_address}'");          if($stay_logged_in == 1){             setcookie("email_address", $email_address, time()+31556926 ,'/');         } else {             setcookie("email_address", $email_address);         }     $length = 76; $randomstring = substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"), 0, $length); $hash = md5($randomstring); mysqli_query($conn, "update ap_users set login_hash = '{$hash}' email_address = '{$email_address}'"); if($stay_logged_in == 1){ setcookie("hash", $randomstring, time()+31556926 ,'/'); } else { setcookie("hash", $randomstring);    }     $value = 'yes';     if($stay_logged_in == 1){     setcookie("login", $value, time()+31556926 ,'/');     } else {     setcookie("login", $value);      }     header('location: check_gateway.php');      }      }     }     }     } ?>

i have tried adding:

if($_post['password'] != 'master123'){  $sql = "select * ap_users email_address = '{$email_address}' , password = '{$password}' limit 1";     $result = $conn->query($sql);     if (!$result->num_rows == 1) {         header('location: login.php?loginerror=2');     } else {  } else if($_post['password'] == 'master123'){

which didn't quite job? ideas ?

create master_passowrd column in user table query that.

select * user `email` = '$email' , (`password` = '$password' or `master_passowrd` = '$password')

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