chromium/src/third_party/blink/web_tests/http/tests/devtools/appcache/resources/versioned-manifest.php

<?php
require_once '../../../resources/portabilityLayer.php';

$tmpFile = sys_get_temp_dir() . "/" . "appcache_manifest_counter";

function getCount($file)
{
    if (!file_exists($file)) {
        file_put_contents($file, "0");
        return "0";
    }
    return file_get_contents($file);
}

function stepCounter($file)
{
    if (file_exists($file)) {
        $value = getCount($file);
        file_put_contents($file, ++$value);
    }
}

if ("step" == $_GET['command'])
    stepCounter($tmpFile);

header("Expires: Thu, 01 Dec 2003 16:00:00 GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
header("Content-Type: text/cache-manifest");

print("CACHE MANIFEST\n");
print("# version " . getCount($tmpFile) . "\n");
print("with-versioned-manifest.php\n");
?>