error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
$q = "INSERT INTO 'Users' ('Users','Date','Mail','Url','Text') VALUES ('$name','$date','$mail','$url','$text') ";
echo $q;
$success = $mysqli -> query ("$q");
$num = intval($_GET['num']);
INSERT INTO `goods` (`good`,`price`) VALUES
('Ноутбук', 30000),
('Телефон', 5000),
('Смартфон', 10000),
('Планшет', 15000)
'INSERT INTO `goods` (`good`,`price`) VALUES '.$var.''
SELECT * FROM `table` WHERE id='N' LIMIT 0,100