正则表达式不处理返回值

So I was learning about regex and stuff today and I got it to work how I wanted it but when I tried to put it to use as part of something to get data from a site, it did not work. Interestingly enough if I echoed the raw html that I was retrieving, then put it into the regex as a string manually, it worked fine. Does anyone know why this would happen? Here is the code:So I was learning about regex and stuff today a