Update PHP without breaking your website
If you need to update PHP on a WordPress site that has not been touched in years, doing it blind is how checkouts white-screen. We audit compatibility, test everything on staging, fix what breaks and switch over with a rollback plan ready. £299 fixed, excluding VAT.
Old PHP is now an unpatched liability
The forced upgrade, or the planned one
Forced upgrades break sites on the host's schedule
What happens when your host decides for you
Hosts do not keep dead PHP versions around forever. When they retire one, thousands of sites get moved in bulk, untested. If your theme was built in 2018 or a plugin has not been updated since, it may call functions newer PHP removed. The result is instant: fatal errors, a white screen, a checkout that stops taking money on a Tuesday morning. Nobody checked your site first, because at that scale nobody can. That upgrade is coming for every site still on 8.1 or older.
- Deprecated and removed functions cause instant fatal errors
- Old plugins and themes are the usual point of failure, not WordPress core
- Bulk host migrations happen on their schedule, not yours
PHP 8.3 is the cheapest speed upgrade you can buy
The upside nobody mentions: newer PHP is quick
This is not just risk management. PHP 8.3 and 8.4 execute code substantially faster than the 7.4 and 8.0 installs still running under many UK business sites, so pages are generated in less server time. That means faster loads for visitors and better Core Web Vitals for Google, without touching your content. Clients come to us worried about breakage and leave with a measurably faster site. Combined with proper hosting support, it is the cheapest performance win available.
- Faster server response on every page load
- Better Core Web Vitals: Google wants LCP under 2.5 seconds
- Lower server load, which matters at traffic spikes
How we update PHP without drama
Audit and staging test
We inventory your theme, plugins and any custom code, check each against the target PHP version, then clone your site to staging and run it there under real conditions.
Fix what the test finds
Deprecated function calls, incompatible plugin versions, crusty custom snippets: we update, replace or patch them on staging until the error log is clean.
Switch over, watch, stand ready
The live switch takes minutes with zero downtime, a full backup is taken first, and a rollback plan sits ready. We monitor the site afterwards so nothing surfaces unnoticed.
Is your website slower than your competitors?
Run a real Lighthouse speed test free. See your scores and the exact fixes that would make your site faster.
One fixed price, or handled forever
The upgrade is £299 as a one-off. If you never want to think about PHP versions again, our care plans and managed hosting keep you on supported, fast versions permanently. Prices exclude VAT.
PHP Upgrade Service
Upgrade end-of-life PHP safely, with everything tested before it goes live.
£299 one-off
- Compatibility audit of themes and plugins
- Staging site test run first
- Code fixes for incompatibilities
- Zero-downtime switchover
- Rollback plan on standby
- Performance boost from newer PHP included
Professional Care
For business sites where downtime costs money. Our most popular plan.
£119 /month
£1190 /year
- Everything in Essential
- 60 minutes of development time every month
- Same-day emergency response
- Speed and Core Web Vitals monitoring
- Monthly accessibility scan
- Phone and email support, 7 days
Managed WordPress Hosting
Fast UK-based hosting with the technical management done for you.
£69 /month
£690 /year
- UK data centre, LiteSpeed-class performance
- Free migration from your current host
- Daily off-server backups included
- Free SSL, CDN and staging site
- WordPress updates managed
- UK support humans, not ticket bots
All prices exclude VAT. Cancel monthly plans any time. Secure card and Direct Debit payments powered by Stripe.
Signs your site needs this now
Your host is emailing deadlines
Warnings about PHP retirement or extended-support fees mean a forced migration is scheduled. Beat it with a tested upgrade on your terms.
The site has not been touched in years
If nobody has run updates since it was built, PHP is almost certainly out of support. Pair the upgrade with ongoing WordPress maintenance so it never drifts again.
Security or insurance reviews flag it
Unsupported PHP fails audits and cyber-insurance questionnaires. An upgrade closes the finding, and our website security service handles the rest of the list.
Frequently asked questions
How do I update PHP on a WordPress site?
The switch itself is one dropdown in your hosting panel. The work is everything before it: checking WordPress core, your theme and every plugin against the new version, testing the site on a staging copy, and fixing whatever throws deprecation warnings or fatal errors. Skip those steps and the dropdown becomes a roulette wheel. Our £299 service does the whole sequence for you.
Is it safe to update PHP on WordPress?
Yes, when it is tested first. Most sites move to PHP 8.3 with only minor fixes, usually in older plugins or custom theme code. The danger is upgrading blind on the live site, where an incompatible plugin can white-screen your checkout instantly. We test everything on a staging copy and keep a rollback plan ready, so the live switch is boring.
What happens if I do not update PHP?
Your site keeps working, quietly unprotected. PHP 8.1 stopped receiving security fixes on 31 December 2025, and PHP 8.2 follows in December 2026, so any new vulnerability found in those versions stays open forever on your server. Hosts also withdraw old versions or charge extended-support fees, and plugin developers stop testing against them.
Which PHP version should my WordPress site run in 2026?
PHP 8.3 is the sweet spot: fully supported, fast, and compatible with almost every actively maintained theme and plugin. PHP 8.4 is worth it for modern codebases. Anything at 8.1 or below is already out of security support, and 8.2 is on borrowed time, so treat both as upgrade-now territory rather than someday jobs.
Will upgrading PHP make my website faster?
Almost always, and for free. Each release since PHP 8.0 has improved the engine, so sites moving from 7.4 or 8.0 to 8.3 typically see noticeably faster server response times, which feeds straight into your Core Web Vitals and Google rankings. It is one of the few speed upgrades that costs nothing in ongoing fees.
Why did my website break when my host updated PHP?
Hosts force-upgrade abandoned PHP versions in bulk, without checking your site first. Old plugins and themes calling functions removed in newer PHP fail instantly with fatal errors or a white screen. Hosts cannot test thousands of sites individually. Our emergency fix service handles the aftermath, but a planned upgrade avoids it entirely.