title: fopen() can't write with error "HTTP wrapper does not support writeable connections"
body: <p>I have a file with url: <code>http://localhost:8080/cache/a66b311547bf3da88f01139271d5bb50.txt</code>
  And in php I using code:</p>
  
  <pre><code>$file = "http://localhost:8080/cache/a66b311547bf3da88f01139271d5bb50.txt"
  $output = serialize($data);
  $fp = fopen($file, "w");
  fputs($fp, $output);
  fclose($fp);
  </code></pre>
  
  <p>When run code, is error</p>
  
  <blockquote>
    <p>Warning: fopen(http://localhost:8080/cache/a66b311547bf3da88f01139271d5bb50.txt): failed to open stream: HTTP wrapper does not support writeable connections ...</p>
  </blockquote>
  
  <p>How to fix it?</p>