Performance

PHP versions on hosting - from legacy apps to PHP 8.5

Changing PHP can speed up a website, but it should be done with application, plugin and error log testing.

Technical guides See hosting FAQ

When this matters

A legacy app may require older PHP, while modern WordPress or stores usually benefit from a newer version. Without testing, a white screen or 500 error can appear.

How to choose a PHP version: application compatibility, security, performance, PHP-FPM, OPcache and post-change tests.

Practical checklist

  • check CMS and plugin requirements
  • make a backup before the change
  • change PHP in the panel and test key URLs
  • check error_log and forms after the change

How Hostilla.pl helps

Hostilla.pl provides multiple PHP versions so older applications can be maintained while newer performance options are available.

What to prepare before contacting support

If you need support, include the domain, account name, time of the problem, exact error message, recent changes and one example URL or mailbox. This lets support check DNS, SSL, mail logs, PHP, database, backups and application configuration faster.

Related Hostilla.pl topics

Hosting performanceQUIC and HTTP/3Redis and MemcachedLVE, cache and bots

Next useful steps

This guide is part of a topical cluster. Use the links below to continue through related Hostilla.pl instructions.

Website performance: PHP, cache and HTTP/3Website 500 error - what to check before contacting supportCloudLinux LVE - hosting limits without guessingHTTP/3 and QUIC - what they give a websiteHosting account hitting LVE limits - what it meansLSAPI and LiteSpeed Cache - fast websites on hostingAll guidesContact support