xhprof-sample-to-flamegraph-stacks

#!/usr/bin/env php
<?php

function xhprof_get_args($argv) {
  array_shift($argv);
  return array_values(
    array_filter($argv, function($arg) {
      return strpos($arg, "-") !== 0;
    })
  );
}

$args = xhprof_get_args($argv);
$file = $args[0];
if (is_dir($file)) {
  $dir = $file;
  $files = glob("{$dir}/*.sample_xhprof") + glob("{$dir}/*.sample_xhprof.gz");
}
else {
  $files = array($file);
}

$stacks = array();

foreach ($files as $file) {
  if (!file_exists($file)) throw new RuntimeException("$file doesn't exist!");

  $file = strpos($file, 'gz') === (strlen($file) - 2) ? "compress.zlib://$file" : $file;

  $raw_xhprof = @unserialize(file_get_contents($file));

  if ($raw_xhprof === FALSE || empty($raw_xhprof)) {
    continue;
  }

  foreach ($raw_xhprof as $stack) {
    $stack_key = implode(";", explode("==>", $stack));
    if (!isset($stacks[$stack_key])) $stacks[$stack_key] = 0;
    $stacks[$stack_key]++;
  }
}

foreach ($stacks as $stack => $count) {
  print "$stack $count" . PHP_EOL;
}