README

A single-file OPcache status page for PHP 8.2+. Drop opcache.php into any directory and get a full overview of your OPcache configuration, cached scripts, and health — zero external dependencies.

Features

• Status tab — all opcache_get_status() metrics at a glance, plus preload script and user when opcache.preload is configured
• Configuration tab — current directives with changed values highlighted, inline documentation from php.net, human-readable formatting (memory sizes, time values, percentages), and a blacklisted paths section
• Health tab — seven checks (memory, keys, interned strings, JIT buffer, wasted memory, hit rate, file cache) with green/yellow/red/info indicators, progress bars, and tuning suggestions
• Scripts tab — sortable table of all cached scripts by hits, memory, or path with per-script cache invalidation on hover
• Cache management — reset the entire cache or invalidate individual scripts, with confirmation modals that warn about the impact of a full reset
• Auto-refresh — toggle a 5-second reload cycle with a live activity chart showing cache hits/s, misses/s, and memory usage over time
• Donut charts — memory, keys, hits, restarts, and conditionally JIT and interned strings
• Squarified treemap — interactive visualization of cached scripts by memory usage with drill-down navigation, inline and fullscreen modes
• Dark mode — automatic via prefers-color-scheme
• Responsive — CSS Grid layout adapts to narrow screens
• Read-only mode — set $readonly = true at the top of opcache.php to disable all cache modification actions (reset and invalidate)

Everything is self-contained in a single PHP file with inline CSS and vanilla JavaScript. No jQuery, no D3.js, no CDN scripts.

Usage

Install the package:

composer require --dev rlerdorf/opcache-status dev-master

Drop it where you want it in your public folder:

ln -s vendor/rlerdorf/opcache-status/opcache.php ./public/

Open the file in your browser:

http://127.0.0.1:8000/opcache.php

If the Zend OPcache extension is not loaded, sample data from data-sample.php is shown automatically.

Development

php -S localhost:8000

Then open http://localhost:8000/opcache.php. The fallback to sample data is based on extension_loaded('Zend OPcache'), not opcache.enable.