jQuery $.get() not working properly

Question

I am having a problem with an extremely simple $.get() request. When I tested it with the error handling functions, it triggered the Error and Complete functions. Also, if I run the php file straight from my URL bar in my browser it works perfectly. Here is my code:

Inline JS: [located in root]

$.get('php/getRank.php', function(teamRank) {
    alert("Your team has finished with rank: " + teamRank);
});

PHP: [located in root/php]

require_once '../includes/constants.php';

$con = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD);
if(!$con){
    die('Could not connect: ' . mysql_error());
    } 
mysql_select_db(DB_NAME, $con);

session_start();

*/ CALCULATE RANK HERE */

echo $rank;

Are there some PHP limitations or something when using $.get()? All I wanted to do is execute a PHP script from JS. Should I use something other than $.get()?

Thank you!

Answer 1

session_start() usually is the first statement in PHP