Question

I’m trying to setup a multiquery in FQL in PHP, with a variable. But I can’t seem to get it to work correctly

  $fql = '{
        "uid"   : "SELECT uid FROM user WHERE username = \"$friend\"",
        "album": "SELECT object_id, link, aid, cover_pid, location, name FROM album WHERE owner IN (SELECT uid FROM #uid)",
        "photo": "SELECT src FROM photo WHERE pid IN (SELECT cover_pid FROM #album)"
    }';

This is basically trying to get the cover photos of your friends album.

If I put in a friend’s username directly in place of $friend, I get all the results, but not with the above code where $friend is dynamically set.

What went wrong!!??
Thanks

Answer 1

Strings using single quotes are not evaluated by PHP. In this case you should concatenate them using the dot operator:

$fql = '{
        "uid"   : "SELECT uid FROM user WHERE username = \"' . $friend . '\"",
        "album": "SELECT object_id, link, aid, cover_pid, location, name FROM album WHERE owner IN (SELECT uid FROM #uid)",
        "photo": "SELECT src FROM photo WHERE pid IN (SELECT cover_pid FROM #album)"
    }';

You should take a look at the “PHP bible”.