Curl

function curl_get($url, $referer = 'https://www.google.com'){ 
          $ch = curl_init(); 
          curl_setopt($ch, CURLOPT_URL, $url); 
          curl_setopt($ch, CURLOPT_HEADER, true); 
          curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36'); 
          curl_setopt($ch, CURLOPT_REFERER, $referer); 
          curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
          $data = curl_exec($ch); 
          curl_close($ch); 
          return $data; 
}
echo curl_get('https://site.com');