Select Multiple Ids from a table

I want to select some id's based on url string but with my code it displays only the first. If i write manual the id's it works great.

I have a url like this http://www.mydomain.com/myfile.php?theurl=1,2,3,4,5 (ids)

Now in the myfile.php i have my sql connection and:

$ids = $_GET['theurl']; (and i am getting 1,2,3,4,5)

if i use this:

$sql = "select * from info WHERE `id` IN (1,2,3,4,5)";
$slqtwo = mysql_query($sql);
while ($tc = mysql_fetch_assoc($slqtwo)) {
    echo $tc['a_name'];
    echo " - ";
}

I am Getting the correct results. Now if i use the code bellow it's not working:

$sql = "select * from info WHERE `id` IN ('$ids')";
$slqtwo = mysql_query($sql);
while ($tc = mysql_fetch_assoc($slqtwo)) {
    echo $tc['a_name'];
    echo " - ";
}

Any suggestions?