mySQLi prepared statement unable to get_result()

Question

I am totally confused by mySQLi. Although I have been using procedural mysql calls for years, I want to get used to making prepared statements for the db security/mySQL inj

Answer 1

Through some checking, even though mysqli is installed on my host, apparently the mysqlnd driver is not present. Therefore, get_result() can not be used(php manual defines get_result as mysqlnd dependent), and instead extra coding would need to be done to handle my result the way I would like.

Therefore, I decided to try and learn how PDO works, and within minutes, voila!!!

Replaced the above code with this:

function checkUsernameEmailAvailability($username, $email) {

echo 'pdo about to be created';

$dsn = 'mysql:dbname='.C_BASE.';host='.C_HOST;
$user = C_USER;
$password = C_PASS;

try {
    $dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}

$params = array(':username' => $username, ':email' => $email);

try{
$sth = $dbh->prepare('SELECT username,email FROM tb_users WHERE username = :username OR email = :email ');
} catch(PDOException $e) {
    echo 'Prepare failed: ' . $e->getMessage();
}

try{
$sth->execute($params);
} catch(PDOException $e) {
    echo 'Execute failed: ' . $e->getMessage();
}
$result = $sth->fetch(PDO::FETCH_ASSOC);
print_r($result);
}

As much error checking as I could think of, and no problems at all first crack at it!

Final Code

function checkUsernameEmailAvailability($username, $email) {
    $dsn = 'mysql:dbname='.C_BASE.';host='.C_HOST;
    $user = C_USER;
    $password = C_PASS;
    new PDO($dsn, $user, $password);

    $params = array(':username' => $username, ':email' => $email);

    $sth = $dbh->prepare('SELECT username,email FROM tb_users WHERE username = :username OR email = :email ');
    $sth->execute($params);
    $result = $sth->fetch(PDO::FETCH_ASSOC);

    print_r($result);
}

Answer 2

mysqli_stmt :: get_result is Available only with mysqlnd package. remove php5-mysql package and install php5-mysqlnd instead