title: XDebug profiling in PHP - can't get output
body: <p>I've got a strange issue.  I've setup XDebug to profile a PHP application we're working on.  I believe everything is setup correctly but I get no output when I run it.  My configuration looks like this:</p>
  
  <pre><code>zend_extension="/usr/local/lib/php/extensions/no-debug-non-zts-20060613/xdebug.so
  [XDebug]
  xdebug.profiler_append = 1
  xdebug.profiler_enable = 0 (I've tried this both on and off)
  xdebug.profiler_enable_trigger = 1
  xdebug.profiler_output_dir = "/debug/xdebug/profiler_output_dir"
  xdebug.profiler_output_name = "cachegrind.out.%p"
  </code></pre>
  
  <p>All the <code>phpinfo()</code> settings match up like they should.  The permissions on the output directory are set to 777 right now just so I can test it.  I've tried using a directory under public_html as well but no luck.  The URL I'm using to launch the profiler is:</p>
  
  <pre><code>http://example.com/my_page.php?XDEBUG_PROFILE
  -or-
  http://example.com/my_page.php?XDEBUG_PROFILE=1
  </code></pre>
  
  <p>Neither works.  Any help would be GREATLY appreciated!!  This app has a 5-6 second page load time and I haven't been able to trace it through code.</p>