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I am trying to use the following code to get information from a WooCommerce Wordpress Order, then pass the details to a database. The code that is supposed to execute this action is as follows:

 

    //Pass udid to database

    add_action('woocommerce_payment_complete', 'send_to_db');

 

    function send_to_db( $order_id ) {

$order = new WC_Order( $order_id ); 

$udid = $order->customer_note;

$email = $order->billing_email;

$db_hostname = 'MYIP';

$db_database = 'MYDATABASE';

$db_username = 'MYUSER';

$db_password = 'MYPASSWORD';

 

    // Connect to server.

    $link = mysqli_connect($db_hostname, $db_username, $db_password);

    if (!$link) {

    die('Not connected : ' . mysqli_error());

    }

 

    // Select the database. 

    $db_selected = mysqli_select_db($link, $db_database);

    if (!$db_selected) {

    die ('Can\'t use database : ' . mysqli_error());

    }

    //find package type

    $items = $order->get_items();

    foreach($items as $item) {

$type = '1';

    if(preg_match("/Basic/i", implode($item))) {

$type = '0';

}

 

    }

    //put it into the db

    $query= "INSERT INTO udid_orders (udid, email, type) VALUES ('$udid','$email','$type')";

    $sql = mysqli_query($link, $query);

    }

    mysqli_close($link);

    //end pass to db

 

 

After this code is executed, it should fill the database then another piece of helper PHP will get the information from the database. However **I have two issues**. The first issue, is that I don't think I created the database properly. I can successfully connect, but after an order is placed, the information is not stored in the database. To create the database, I followed just did a simple

    `CREATE DATABASE menagerie;` and created the database. I assumed the table and rows would create themselves after this code was executed. Please correct me if I'm wrong. My second issue is when I run the following helper code:

 

    <?php

    $x = '1';

    //include 'db.php';

    $db_hostname = 'MYIP';

    $db_database = 'MYDATABASE';

    $db_username = 'MYUSERNAME';

    $db_password = 'MYPASSWORD';

    

    // Connect to server.

    $link = mysqli_connect($db_hostname, $db_username, $db_password);

    if (!$link) {

        die('Not connected : ' . mysqli_error());

    }

    

    // Select the database. 

    $db_selected = mysqli_select_db($link, $db_database);

    if (!$db_selected) {

        die ('Can\'t use database : ' . mysqli_error());

    }

    

    //get udid from database

    while($x = '1'){

    $query = "SELECT id, udid, email, premium FROM udid_orders ORDER BY timestamp DESC LIMIT 1";

    $sql = mysqli_query($link, $query);

    if(mysqli_num_rows($sql) >= 1){

    echo 'registering';

    $row = mysqli_fetch_array($sql);

    $number = $row['id'];

    $udidsql = $row['udid'];

    $email = $row['email'];

    $is_premium = $row['premium'];

    $service_port = '622';

    $address = 'MYIPHERE';

    $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

    if ($socket === false) {

    echo 'Failed to create socket';

    return;

    }

    $result = socket_connect($socket, $address, $service_port);

      if ($result === false) {

      echo 'Failed to connect socket';

      return;

    }

   

    $in = "weTi3xJEy7kbldDYWdXe";

    $out = '';

    

    socket_write($socket, $in, strlen($in));

    while ($out = socket_read($socket, 1024)) {

       break;

    }

   

    //get us a random number for the name 

    $request = 'OrderInfo ';

    //$random = rand(1, 2000);

    //name that nigga

    $name = $number;

    $request .= $name;

    $request .= " ";

    //$request .= $order->billing_email;

    $request .= $email;

    $request .= " ";

    //$is_premium = '1';

    // if(preg_match("/Bronze/i", implode($item))) {

    // $is_premium = '0';

    // }

    // $request .= $is_premium;

    //}

    $request .= $is_premium;

    $out = '';

    socket_write($socket, $request, strlen($request)); 

    while($out = socket_read($socket, 1024)) {

    break;

    }

    $udids = explode(',', $udidsql);

    foreach($udids as $udid){

    $udid_request = "UdidRegister ";

    

    $udid = $udidsql;

    

    $udid_request .= $udid;

   

    $udid_status = "";

    socket_write($socket, $udid_request, strlen($udid_request));

    }

    socket_close($socket);

    

    $update = "UPDATE udid_orders SET status='1' WHERE udid='$udidsql'";

    $sql_update = mysqli_query($link, $update);

   

      }

    

   

    else{

    echo 'sleeping';

    sleep(5);

    }

    

    }

    // close mysql

    mysqli_close($link);

    ?>

 

 

I get the following error `PHP Warning:  mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /link.php on line 25. I have no idea what is even means, let alone how to troubleshoot it. 

 

I am pretty new to both PHP and MySQL, so any pointers in the right direction would be really helpful.

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