$options = array(
'http'=>array(
'method'=>"GET",
'header'=>"User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0\r\n"
)
);
$context = stream_context_create($opts);
file_get_contents('http://www.baza-firm.com.pl', false, $context)
$options и
$opts не смущают?