PHP Version Checker Online

How the Online PHP Version Checker Works

This tool checks publicly visible server signals to detect the PHP version a website is running. Here's the process:

1. Paste a URL, enter any website address. The tool automatically normalizes it and tries both root and common paths.
2. Server scan, the checker inspects HTTP response headers (like X-Powered-By and Server) for PHP version signatures.
3. Result, if the server exposes PHP info, you get the detected version with a confidence level. If the site hides its stack, you'll see "Not detectable."

No login, no hosting access, no WordPress dashboard needed. Just a URL and a few seconds.

Why Check Your PHP Version?

PHP is the engine behind most of the web, WordPress, WooCommerce, Drupal, Laravel, and millions of custom sites all run on it. But unlike a car dashboard, most websites don't show you what version is under the hood.

That matters because outdated PHP versions stop receiving security patches. Once a version hits end-of-life, every newly discovered vulnerability stays permanently unfixed. Your site keeps running, but the lock on the door is broken and nobody's coming to fix it. Run a security headers check alongside this to get a full picture of your server's security posture.

Performance is the other side. PHP 8.4 and 8.5 are significantly faster than older branches, we're talking up to 33% more requests per second in real WordPress benchmarks. That translates to faster page loads, better Core Web Vitals, and happier visitors. Use our performance checker to measure the impact.

If you're running a WordPress site, we've written detailed guides on which PHP version to use and which PHP extensions WordPress needs. You can also check which WordPress version a site is running, use the WordPress Theme & Plugin Detector to see the full stack a site is running, or check any site's full technology stack to see what's under the hood.

Setting up or hardening a WordPress install? Our wp-config.php generator builds a secure configuration baseline, and the WP REST API exposure checker flags whether your site is leaking user data through the REST API.

Tired of chasing PHP versions altogether? A static Astro website has no PHP, no plugins, and no database to maintain, just clean HTML that loads in under a second and is easy for AI engines to cite. If you're on WordPress, our WordPress to Astro migration services rebuild your site without losing your rankings.

PHP Version Support Timeline

Not sure if your PHP version is still supported? Here's the current lifecycle for every PHP branch from 8.0 to 8.5, including active support dates, security-only windows, and known CVE counts.

If your site is on anything below PHP 8.2, it's time to move. For a step-by-step walkthrough, check our guide on upgrading WordPress to PHP 8.5 safely.