file_get_contents script works with some websites but not others

Question

I\'m looking to build a PHP script that parses HTML for particular tags. I\'ve been using this code block, adapted from this tutorial:

Answer 1

It just requires a user-agent ("any" really, any string suffices):

file_get_contents("http://www.freshdirect.com",false,stream_context_create(
    array("http" => array("user_agent" => "any"))
));

See more options.

Of course, you can set user_agent in your ini:

 ini_set("user_agent","any");
 echo file_get_contents("http://www.freshdirect.com");

... but I prefer to be explicit for the next programmer working on it.