N-Porsh

<?php

try {
	$pdo = new PDO(
		'mysql:host=localhost;dbname=test_database',
		'username',
		'password',
		array(
			PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
			PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'

N-Porsh

<?php
if(isset($_GET['uid']) && isset($_GET['mid'])){

 $mailid = (int)$_GET['mid'];
 $userid = (int)$_GET['uid'];

 $db = new mysqli_connect('databaseserver', 'databaseuser', 'databasepassword', 'databasename');
 $db->query("INSERT INTO mailreaders (mailid, userid) VALUES ($mailid, $userid)");

 $im=imagecreatetruecolor(1,1);