installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/vendor/mtdowling/jmespath.php/bin/perf.php

@@ -0,0 +1,68 @@
+#!/usr/bin/env php
+<?php
+
+if (file_exists(__DIR__ . '/../vendor/autoload.php')) {
+    require __DIR__ . '/../vendor/autoload.php';
+} elseif (file_exists(__DIR__ . '/../../../autoload.php')) {
+    require __DIR__ . '/../../../autoload.php';
+} else {
+    throw new RuntimeException('Unable to locate autoload.php file.');
+}
+
+$xdebug = new \Composer\XdebugHandler\XdebugHandler('perf.php');
+$xdebug->check();
+unset($xdebug);
+
+$dir = isset($argv[1]) ? $argv[1] : __DIR__ . '/../tests/compliance/perf';
+is_dir($dir) or die('Dir not found: ' . $dir);
+// Warm up the runner
+\JmesPath\Env::search('foo', []);
+
+$total = 0;
+foreach (glob($dir . '/*.json') as $file) {
+    $total += runSuite($file);
+}
+echo "\nTotal time: {$total}\n";
+
+function runSuite($file)
+{
+    $contents = file_get_contents($file);
+    $json = json_decode($contents, true);
+    $total = 0;
+    foreach ($json as $suite) {
+        foreach ($suite['cases'] as $case) {
+            $total += runCase(
+                $suite['given'],
+                $case['expression'],
+                $case['name']
+            );
+        }
+    }
+    return $total;
+}
+
+function runCase($given, $expression, $name)
+{
+    $best = 99999;
+    $runtime = \JmesPath\Env::createRuntime();
+
+    for ($i = 0; $i < 100; $i++) {
+        $t = microtime(true);
+        $runtime($expression, $given);
+        $tryTime = (microtime(true) - $t) * 1000;
+        if ($tryTime < $best) {
+            $best = $tryTime;
+        }
+        if (!getenv('CACHE')) {
+            $runtime = \JmesPath\Env::createRuntime();
+            // Delete compiled scripts if not caching.
+            if ($runtime instanceof \JmesPath\CompilerRuntime) {
+                array_map('unlink', glob(sys_get_temp_dir() . '/jmespath_*.php'));
+            }
+        }
+    }
+
+    printf("time: %07.4fms name: %s\n", $best, $name);
+
+    return $best;
+}