MySQL вернула пустой результат (т.е. ноль строк)

<?
if(isset($_GET['colour']))
{
//$conn=mysql_connect("localhost","root","");
mysql_connect("localhost","root","");
$database = "tests";//ИМЯ БАЗЫ ДАННЫХ
$table_name = "Question";//ИМЯ ТАБЛИЦЫ
mysql_select_db($database);
 
 mysql_query ("INSERT INTO Question (text) VALUES ($_GET[colour])");
}
?>

mysql_query("INSERT INTO `Question` (text) VALUES ('{$_GET['colour']}')") or die (mysql_error());

<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL);
if(isset($_GET['colour'])) {
    mysql_connect("localhost","root","") or die(mysql_error);
    $database = "tests";
    mysql_select_db($database) or die(mysql_error);
    $colour = mysql_real_escape_string($_GET['colour']);
    mysql_query ("INSERT INTO Question (text) VALUES ('$colour')") or die(mysql_error());
}

<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL);
var_dump($_GET);
if(isset($_GET['colour'])) {
    mysql_connect("localhost","root","") or die(mysql_error);
    $database = "tests";
    mysql_select_db($database) or die(mysql_error);
    $colour = mysql_real_escape_string($_GET['colour']);
    mysql_query ("INSERT INTO Question (text) VALUES ('$colour')") or die(mysql_error());
}