Php login via email in mysql -

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hi guys have loging via email , , want add login via email. when add (login=:login or) in sql query, got bug can login password.

here code :

public function login($login,$upass) {     try {         $stmt = $this->conn->prepare("select * klient login=:login or email=:login limit 1");         $stmt->execute(array(':login' => $login));         $userrow = $stmt->fetch(pdo::fetch_assoc);          if ($stmt->rowcount() == 1) {             if ($userrow['userstatus'] == "y") {                 if ($userrow['haslo'] = $upass) {                     $_session['usersession'] = $userrow['idklient'];                     return true;                 } else {                     header("location: index.php?error");                     exit;                 }             } else {                 header("location: index.php?inactive");                 exit;             }         } else {             header("location: index.php?error");             exit;         }     } catch (pdoexception $ex) {         echo $ex->getmessage();     } }

edit:

i'm trying add password_hash(), when login in website going down. tried add password hash website going down when login in.

public function login($login, $upass)     {         try {             $stmt = $this->conn->prepare("select * klient login=:user_login or email=:user_login");             $stmt->execute(array(":user_login" => $login));             $userrow = $stmt->fetch(pdo::fetch_assoc);          if ($stmt->rowcount() == 1) {             if ($userrow['userstatus'] == "y") {                 if ( password_verify($upass, $userrow['haslo'])) {                     $_session['usersession'] = $userrow['idklient'];                     return true;                 } else {                     header("location: index.php?error");                     exit;                 }             } else {                 header("location: index.php?inactive");                 exit;             }         } else {             header("location: index.php?error");             exit;         }     } catch (pdoexception $ex) {         echo $ex->getmessage();     } }

you need change here add param email 

    $stmt->execute(array(':login' => $login,':email' => $login));

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