php Passwort ändern "" SQL xamp "" Fatal error: Uncaught Fehler: Aufruf der undefinierten Methode mysqli :: mysqli_query()

Question

<post><?php 
$dbc=mysqli_connect(DB_HOST,DB_USER,DB_PASSWORD) or die ('Failed'.mysqli_error()); 
if(isset($_POST['submit'])): 
    extract($_POST); 
    if($old_password!="" && $password!="" && $confirm_pwd!="") :`enter code here` 
    $user_id = '1'; 
    $old_pwd=md5(mysqli_real_escape_string($dbc,$_POST['old_password'])); 
    $pwd=md5(mysqli_real_escape_string($dbc,$_POST['password'])); 
    $c_pwd=md5(mysqli_real_escape_string($dbc,$_POST['confirm_pwd'])); 
    if($pwd == $c_pwd) : 
     if($pwd!=$old_pwd) : 
     $db_check=$dbc->mysqli_query($dbc,"SELECT * FROM `users` WHERE `id`='$user_id' AND `password` ='$old_pwd'"); 
     $count=mysqli_num_rows(mysqli_query($dbc,"SELECT * FROM `users` WHERE `id`='$user_id' AND `password` ='$old_pwd'")); 
     if($count==1) : 
      $fetch=$db->mysqli_query($dbc,"UPDATE `users` SET `password` = '$pwd' WHERE `id`='$user_id'"); 
      $old_password=''; $password =''; $confirm_pwd = ''; 
      $msg_sucess = "Your new password update successfully."; 
      else: 
      $error = "The password you gave is incorrect."; 
      endif; 
     else : 
      $error = "Old password new password same Please try again."; 
     endif; 
    else: 
     $error = "New password and confirm password do not matched"; 
    endif; 
    else : 
    $error = "Please fil all the fields"; 
    endif; 
endif; 
    ?> <code> 

Answer 1

mysqli_query ist nicht Methot des Objekts. mysqli_query ist nur PHP-Funktion. Fix $ db_check = $ dbc-> mysqli_query ($ dbc, ...); zu $ db_check = $ mysqli_query ($ dbc, ...);

Wenn Sie OOP verwenden möchten, müssen Sie mysqli object erstellen: $ mysqli = new mysqli ("localhost", "my_user", "mein_passwort", "world"); $ ergebnis = $ mysqli-> query ($ sql);

können Sie hier über http://php.net/manual/en/class.mysqli.php lesen.