我的代码无法从mysql数据库中读取

Question

我试图调试这次没有成功。到目前为止，这是我尝试过的

<?php

$cid= (string)$_GET['cid'];//I passed this from another page using get method

echo $cid; //My code works up to this point

$record = mysql_query("select * from questions where QType = '$cid'");

$array = array();

while($row = mysql_fetch_assoc($record))

        {

            $array[] = $row;

        }

    for($var = 0; $var<count($array);$var++)

        {

        echo $array[$var]['Question'].'<br>';

        }           

            ?>