Profiler settings XHprof for universal use

In my previous article capabilities of PHP code profiler XHprof from Facebook developers, namely installation, setting and usage were discussed.

The task today is to set a profiler for universal usage looking like:

/mysite/page>?debug

So that one could use a profiler with the help of the same method for each page.We have achieved that. So this article covers this issue.

So,

0) we determine development-site on which we want to profile and analyze web-application

1) we create domain <xhprof_domain>. We copy folders xhprof_html and xhprof_lib from original folder XHprof into domain directory.

2) we create xhprof_log folder in the root of domain.

3) we create xhprof.php file in the root of domain with the following content:

 function my_xhprof_enable() {
  if (extension_loaded('xhprof')) {
    switch ($_GET['debug']) {
      case 'simple':
        define('DEBUG_MICROTIME_START', microtime(1));
        break;
      
      case 'all':
        xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);
        break;
      
      case 'cpu':
        xhprof_enable(XHPROF_FLAGS_CPU);
        break;
      
      case 'memory':
        xhprof_enable(XHPROF_FLAGS_MEMORY);
        break;
      
      case 'time':
      default:
        xhprof_enable();
    }
  }
}

function my_xhprof_disable() {
  if ($_GET['debug'] == 'simple') {
    $time = number_format(microtime(1) - DEBUG_MICROTIME_START, 4);
    $cur  = number_format(memory_get_usage() / 1024, 3);
    $peak = number_format(memory_get_peak_usage() / 1024, 3);
    print "\ntime = {$time} seconds<br />\nmemory_get_usage = {$cur} kb<br />\nmemory_get_peak_usage = {$peak} kb";
  }
  elseif (extension_loaded('xhprof')) {
    include_once dirname(__FILE__) . '/xhprof_lib/utils/xhprof_lib.php';
    include_once dirname(__FILE__) . '/xhprof_lib/utils/xhprof_runs.php';
    $profiler_namespace = isset($_GET['namespace']) ? $_GET['namespace'] : $_SERVER['SERVER_NAME'];
    $xhprof_data = xhprof_disable();
    $xhprof_runs = new XHProfRuns_Default();
    $run_id = $xhprof_runs->save_run($xhprof_data, $profiler_namespace);
   
    $profiler_url = sprintf('<xhprof_domain>/xhprof_html/index.php?run=%s&source=%s', $run_id, $profiler_namespace);
    print '<script type="text/javascript">window.location.href=\''. $profiler_url .'\';</script>';
  }
}

if (isset($_GET['debug'])) {
  my_xhprof_enable();
  register_shutdown_function('my_xhprof_disable');
}