Question

I am using a nice piece of code to reorder db content using drag and drop. I can get it to work locally by enabling the PDO extension in the php.ini file but my hosting package (shared) does not allow PDO and MySQLi simultaneously. I am unfamiliar with PDO and I would appreciate any help in rewriting the following segment to work with MySQLi, if possible.
Thanks.

<?php
if (isset($_POST['orders'])) {

} else {
    echo json_encode(array('error' => true));
}

$orders = explode('&', $_POST['orders']);

$array = array();

foreach($orders as $item) {
    $item = explode('=', $item);
    $item = explode('_', $item[1]);
    $array[] = $item[1];
}

try {

    $objDb = new PDO('mysql:host=localhost;dbname=test', 'user', 'pw');
    $objDb->exec("SET CHARACTER SET utf8");

    foreach($array as $key => $value) {
        $key = $key + 1;
        $sql = "UPDATE `artwork` 
               SET `listorder` = ?
               WHERE `id` = ?";
               echo $sql;

        $objDb->prepare($sql)->execute(array($key, $value));        
    }

    echo json_encode(array('error' => false));

} catch(Exception $e) {

    echo json_encode(array('error' => true));

}

Answer 1

My recommendation? Find another host. Going from PDO to mysqli is not a good idea, because you will waste time porting code into a less portable state.

— Edit —

You can try the following code snippet, if it doesn’t work it should get you started. I couldn’t test it because none of my servers have mysql* modules compiled.

$dbo = new mysqli('localhost', 'user', 'password', 'database');

if (mysqli_connect_error()) {
    echo sprintf('Unable to connect: ErrNo: (%d), ErrMsg: (%s)', mysqli_connect_errno, mysqli_connect_error());
    exit;
}

foreach ($array as $key => $value) {

    $key = $key + 1;

    $sql =  "UPDATE `artwork` SET `listorder` = " . (int) $key . "  WHERE `id` = " . (int) $value;

    $dbo->query($sql);
}

$dbo->close();

You can get more information on mysqli query and other functions here.

Anyway, good luck.