Question

$mysqli = mysqli_connect("localhost", "root", "pass", "test");

function check_login($mail,$pwd){   
    global  $mysqli;    
    if($stmt=  $mysqli->prepare('SELECT COUNT(*) FROM `users` WHERE mail = ? AND pwd = MD5(?)')){
        $stmt->bind_param("ss", $mail, $pwd);       
        $stmt->execute();
        $stmt->bind_result($count);
        $stmt->close();
        var_dump($count);
    }
    return ($count > 0 ? true : false);
}

check_login('[e-mail]','pass');

I have write this script by seeing some script on stackoverflow.I tried to run it and found that $count is NULL after script execute.

I want to know why this is not worked for me. I have tried to run same command on Mysql and it’s show me result.

someone help me on it..

Answer 1

mysqli::bind_result needs to be invoked after the ->execute and before the ->fetch call. The fetch() isn’t optional, as the (bound result) variable reference is merely an alternative to extracting the result row manually.

So in your code:

    $stmt->execute();
    $stmt->bind_result($count);
    $stmt->fetch();  // result array thrown away