PHP cache to disk using fwrite

Question

I'm using the following codes to cache URLs visited, hopefully saving some CPU. At the beginning of the php files:

$url = $_SERVER['DOCUMENT_ROOT'].$_SERVER["REQUEST_URI"];
$break = Explode('/', $url);
$file = $break[count($break) - 1];
$cachefile = 'cache/cached-'.$file.'.html';
$cachetime = 900;

// Serve from the cache if it is younger than $cachetime
if (file_exists($cachefile) && time() - $cachetime < filemtime($cachefile)) {
  //  echo "<!-- Cached copy, generated ".date('H:i', filemtime($cachefile))." -->\n";
    readfile($cachefile);
    exit;
}
ob_start();

At the end of the php files:

// Cache the contents to a cache file
$cached = fopen($cachefile, 'w');
fwrite($cached, ob_get_contents());
fclose($cached);
ob_end_flush(); // Send the output to the browser

This works fine, but it creates files using the full URI (ie including queries, # etc). I am trying to have the cached file written once, without anything else.

In other words, when someone visits mysite.com/index.php, I want one file index.php.html created. The if someone else visits mysite.com/index.php?sdgd=3534&#whatever&other&stuff I want the cached file to still be index.php.html therefore overwriting the previous index.php.html created. I do not want a cached file named index.php?sdgd=3534&#whatever&other&stuff.html - which seems to happen now.

I know it probably has to do with:

$cachefile = 'cache/cached-'.$file.'.html';

but couldn't figure it out myself.

How to accomplish this?

Answer 1

Thanks for the suggestions guys. That wasn't the case, so I'm gonna asnwer my own question. Apparently the answer was as easy as changing

$url = $_SERVER['DOCUMENT_ROOT'].$_SERVER["REQUEST_URI"];

into

$url = strtok($_SERVER['DOCUMENT_ROOT'].$_SERVER["REQUEST_URI"], '?');

This seems to cache a file with a name excluding the queries.