How to Check WordPress PHP Version and Extensions

How to Check WordPress PHP Version and Extensions with backups, plugin checks, hosting notes, maintenance steps, and post-change verification.
How to Check WordPress PHP Version and Extensions WordPress maintenance tutorial for plugins, hosting, backups, cache, and verification

Check WordPress PHP Version and Extensions is a practical maintenance workflow for site owners, hosts, and agencies preparing for plugin updates, performance work, or WordPress version changes.

A WordPress maintenance plan should prove the site still works after updates. That means checking the business workflow, hosting layer, plugins, backups, cache, email, and access before a small issue becomes an outage.

When To Run This Check

Run this quarterly and before major WordPress, WooCommerce, builder, security plugin, or PHP upgrades.

Before You Start

  • Check the PHP version currently used by the site, not only the server default.
  • Review plugin and theme requirements before changing PHP.
  • Back up the site before changing PHP versions or PHP settings.
  • Pick a rollback path in the hosting panel before switching.

Maintenance Steps

  • Use Site Health, hosting panel tools, or WP Toolkit to record current PHP status.
  • Check for missing extensions that plugins require.
  • Change PHP on staging first when available.
  • Retest admin, public pages, forms, checkout, cache, and scheduled tasks after switching.
  • Keep notes about the old version, new version, and plugins that forced the change.

Hosting And Control Panel Notes

  • cPanel MultiPHP Manager, Plesk PHP settings, CloudLinux Selector, and managed WordPress dashboards may all control PHP differently.
  • Do not assume command-line PHP and web PHP are the same version.
  • Some older plugins may only fail under specific pages or scheduled tasks.

Verify It Works

Confirm Site Health does not show a new PHP warning, error logs are quiet, admin loads, and business workflows still work.

Backup And Rollback Notes

  • Take a backup before changing plugins, themes, PHP, cache, DNS, checkout, forms, email, or user access.
  • Use staging for risky changes on ecommerce, membership, booking, LMS, high-lead, or high-traffic sites.
  • Keep rollback ownership clear: who restores, who approves, and how the site is verified afterward.
  • Document the maintenance window and preserve version notes for future troubleshooting.

Related Fix I.T. Phill Guides

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