我试图连接到我的数据库，当我运行代码时，出现错误。谁能告诉我我的PHP代码有什么错误和错误吗？谢谢。

Error: No database selected

PHP代码：

include('.conf.php');
$prof = $_GET['profile'];
$prof = addslashes(htmlentities($prof));
$query = "SELECT * FROM aTable where id = '".mysql_real_escape_string($prof)."'";
$info_array = mysql_query($query, $con) or die (mysql_error()).;

while($row = mysql_fetch_array( $info_array )) 
{
    echo $row['num1'];
    echo "</br>";
    echo $row['num2'];
    echo "</br>";
    echo $row['num3'];
    echo "</br>";
    echo $row['num4'];
};

mysql_close($con);

.conf.php 文件：

<?php
    $conf['db_hostname'] = "xxx";
    $conf['db_username'] = "xxx";
    $conf['db_password'] = "xxx";
    $conf['db_name'] = "xxx";
    $conf['db_type'] = "mysql";

    $con = mysql_connect('xxx', 'xxx', 'xxx') or die (mysql_error());
    $db  = mysql_select_db("aTable", $con);
?>