get header info by php

getheaders.php

function getFileInfo($url){
  $ch = curl_init($url);
  curl_setopt( $ch, CURLOPT_NOBODY, true );
  curl_setopt( $ch, CURLOPT_HEADER, false );
  curl_setopt( $ch, CURLOPT_RETURNTRANSFER, false );
  curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
  curl_setopt( $ch, CURLOPT_MAXREDIRS, 3 );
  curl_exec( $ch );
  $headerInfo = curl_getinfo( $ch );
  curl_close( $ch );
  return $headerInfo;
}

function get_headers_curl($url){
  $curl = curl_init();
  curl_setopt_array( $curl, array(
      CURLOPT_HEADER => true,
      CURLOPT_NOBODY => true,
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_FOLLOWLOCATION => true,
      CURLOPT_MAXREDIRS => 3,
      CURLOPT_URL => $url));
  $headers = explode( "\n", curl_exec($curl));
  curl_close($curl);
  return $headers;
}