the following code was working to retrieve the usd price, now for some reason its not
require 'Mysql.php';
require 'Util.php';
$file = file_get_contents("
http://blockchain.info/ticker");
$vars = json_decode($file, true);
$usd = $vars['USD']['15m'];
$net_usd = number_format((($usd) * (100 - Settings::fee)) / 100, 2);
echo $net_usd returns zero when should be the price. offering 0.1 btc to someone who can fix.
You left out where Settings::fee is coming from. If the class Settings isn't found, you'd get a fatal error. The fact that you aren't indicates that it's mis-defined somewhere. You'll need to either post more code, or do digging with that lead yourself.

Probably in Util.php, but I doubt that would be an area of concern as it seems to have just 'stopped working'.
the following code was working to retrieve the usd price, now for some reason its not
require 'Mysql.php';
require 'Util.php';
$file = file_get_contents("
http://blockchain.info/ticker");
$vars = json_decode($file, true);
$usd = $vars['USD']['15m'];
$net_usd = number_format((($usd) * (100 - Settings::fee)) / 100, 2);
echo $net_usd returns zero when should be the price. offering 0.1 btc to someone who can fix.
Try changing the url in file_get_contents to be https://
$file = file_get_contents("https://blockchain.info/ticker");
Blockchain.info recently changed some things around, and maybe you're not getting the file through redirect.
I was able to use http and it seems that there is no redirects without https. Blockchain is behind cloudflare which could be causing blocking issues (I've had it various times before).