PHP problem in IE "supplied argument is not a valid stream resource"

Question

I set up a thing so that, from various places on my website, I can link to a page called "linktothis.php" which will include a link to the referring page. It works fine in firefox, but IE seems to give it trouble and it tells me:

Warning: fread(): supplied argument is not a valid stream resource in /usr/local/apache/sites/nextadvisor/linktothis.php on line 19

(line 19 is the 4th line below)

  <?php
  $filesource = $_SERVER['HTTP_REFERER'];
  $a = fopen($filesource,"r"); //fopen("html_file.html","r");
  $string = fread($a,1024);
  if (eregi("<linkto>(.*)</linkto>",
  $string, $out)) {
  $outdata = $out[1];
  }
  //echo $outdata;
  $outdatapart = explode( " " , $outdata);

  echo $part[0];

  if (empty($outdata)) if (eregi("<title>(.*)</title>",
  $string, $out)) {
  $outdata = $out[1];
  }
  //echo $outdata;
  $outdatapart = explode( " " , $outdata);

  echo $part[0];

  ?>

What do I need to switch so that this will work in IE?

Answer 1

Could it be that your IE does not provide the referring page to your script? Try a var__dump($_SERVER) to verify that.

Answer 2

It should be issue with $_SERVER['HTTP_REFERER'];. Try to echo this variable in Ie and see what it contains.