JSON + MYSQL to MYSQLI Help

[emery]

Could anyone please transform this code to normal mysql instead of mysqli, i am not familure with mysqli and it does not work on my server

 

<?php

// Helper method to get a string description for an HTTP status code
// From http://www.gen-x-design.com/archives/create-a-rest-api-with-php/ 
function getStatusCodeMessage($status)
{
    // these could be stored in a .ini file and loaded
    // via parse_ini_file()... however, this will suffice
    // for an example
    $codes = Array(
        100 => 'Continue',
        101 => 'Switching Protocols',
        200 => 'OK',
        201 => 'Created',
        202 => 'Accepted',
        203 => 'Non-Authoritative Information',
        204 => 'No Content',
        205 => 'Reset Content',
        206 => 'Partial Content',
        300 => 'Multiple Choices',
        301 => 'Moved Permanently',
        302 => 'Found',
        303 => 'See Other',
        304 => 'Not Modified',
        305 => 'Use Proxy',
        306 => '(Unused)',
        307 => 'Temporary Redirect',
        400 => 'Bad Request',
        401 => 'Unauthorized',
        402 => 'Payment Required',
        403 => 'Forbidden',
        404 => 'Not Found',
        405 => 'Method Not Allowed',
        406 => 'Not Acceptable',
        407 => 'Proxy Authentication Required',
        408 => 'Request Timeout',
        409 => 'Conflict',
        410 => 'Gone',
        411 => 'Length Required',
        412 => 'Precondition Failed',
        413 => 'Request Entity Too Large',
        414 => 'Request-URI Too Long',
        415 => 'Unsupported Media Type',
        416 => 'Requested Range Not Satisfiable',
        417 => 'Expectation Failed',
        500 => 'Internal Server Error',
        501 => 'Not Implemented',
        502 => 'Bad Gateway',
        503 => 'Service Unavailable',
        504 => 'Gateway Timeout',
        505 => 'HTTP Version Not Supported'
    );

    return (isset($codes[$status])) ? $codes[$status] : '';
}

// Helper method to send a HTTP response code/message
function sendResponse($status = 200, $body = '', $content_type = 'text/html')
{
    $status_header = 'HTTP/1.1 ' . $status . ' ' . getStatusCodeMessage($status);
    header($status_header);
    header('Content-type: ' . $content_type);
    echo $body;
}

function redeem() {

    // Check for required parameters
    if (isset($_POST["rw_app_id"]) && isset($_POST["code"]) && isset($_POST["device_id"])) {

        // Put parameters into local variables
        $rw_app_id = $_POST["rw_app_id"];
        $code = $_POST["code"];
        $device_id = $_POST["device_id"];

        // Look up code in database
        $user_id = 0;
        $stmt = $this->db->prepare('SELECT id, unlock_code, uses_remaining FROM rw_promo_code WHERE rw_app_id=? AND code=?');
        $stmt->bind_param("is", $rw_app_id, $code);
        $stmt->execute();
        $stmt->bind_result($id, $unlock_code, $uses_remaining);
        while ($stmt->fetch()) {
            break;
        }
        $stmt->close();

        // Bail if code doesn't exist
        if ($id <= 0) {
            sendResponse(400, 'Invalid code');
            return false;
        }

        // Bail if code already used		
        if ($uses_remaining <= 0) {
            sendResponse(403, 'Code already used');
            return false;
        }	

        // Check to see if this device already redeemed	
        $stmt = $this->db->prepare('SELECT id FROM rw_promo_code_redeemed WHERE device_id=? AND rw_promo_code_id=?');
        $stmt->bind_param("si", $device_id, $id);
        $stmt->execute();
        $stmt->bind_result($redeemed_id);
        while ($stmt->fetch()) {
            break;
        }
        $stmt->close();

        // Bail if code already redeemed
        if ($redeemed_id > 0) {
            sendResponse(403, 'Code already used');
            return false;
        }

        // Add tracking of redemption
        $stmt = $this->db->prepare("INSERT INTO rw_promo_code_redeemed (rw_promo_code_id, device_id) VALUES (?, ?)");
        $stmt->bind_param("is", $id, $device_id);
        $stmt->execute();
        $stmt->close();

        // Decrement use of code
        $this->db->query("UPDATE rw_promo_code SET uses_remaining=uses_remaining-1 WHERE id=$id");
        $this->db->commit();

        // Return unlock code, encoded with JSON
        $result = array(
            "unlock_code" => $unlock_code,
        );
        sendResponse(200, json_encode($result));
        return true;
    }
    sendResponse(400, 'Invalid request');
    return false;

}

// This is the first thing that gets called when this page is loaded
// Creates a new instance of the RedeemAPI class and calls the redeem method
$api = new RedeemAPI;
$api->redeem();

?>

[Christian F.]

I'd recommend using DBO instead, if you don't have MySQLi available. Should be as simple as replacing the object type when creating it.

[emery]

How do i use that?

[Christian F.]

It's all explained in the PHP manual, so I strongly recommend reading through it.

Once you've done that, tried modifying your code, and still find yourself stuck then it's just to ask. The more specific the question, and the more information around it you post, the higher the chance that someone can help you out.

[emery]

Ok, thanks

[Christian F.]

You're welcome, and glad I could help.

Good luck on DBO!