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Reddit
reddit.com โ€บ r/wordpress โ€บ how to check php compatibility?
How to check PHP compatibility? : r/Wordpress
August 25, 2025 - I would recommend switching to PHP 8.3 or even PHP 8.2. From the WordPress PHP versions Compatibility page you can see that WP is only beta-compatible with PHP 8.4. ... Make a backup. Enable WP_DEBUG, WP_DEBUG_LOG in your wp-config.php. Switch the PHP version. Check if there are any errors in wp-content/debug.log ยท If something goes wrong, switch back to an older PHP version. ... Most plugins that are actively maintained should already work fine on PHP 8+, but thereโ€™s no perfect โ€œcheckerโ€ anymore.
Discussions

This is a bad idea. PHP 8.2 is supported till Nov 2026.
Well it's "Performance" tag, not security, so it's not wrong. More on reddit.com
๐ŸŒ r/Wordpress
65
28
August 15, 2025
Should I update from PHP 7.4 ?
PHP versions below 8.1 are no longer being supported ( https://php.watch/versions ) i.e. if a bug or vulnerability is discovered in 7.4 or 8, it ain't getting fixed. There's not really any reason to NOT upgrade. Recent versions offer performance improvements. You should always be running up to date WP, theme and plugins anyway - if you're running a plugin or theme that requires php 7.4, it's just a matter of time until you're hacked, because the theme/plugin isn't getting patched. More on reddit.com
๐ŸŒ r/Wordpress
21
5
December 13, 2024
identifying PHP Version from Source Code
No. Why are you asking? You can find out the version being used in Tools > Site Health in the WP Dashboard. End users can't see what version you're running. More on reddit.com
๐ŸŒ r/Wordpress
3
0
July 2, 2024
is there a tool to check code from version 8.0 to 8.1? as in what methods might need to be changed
Rector can do this using the "Up to PHP x.y" level sets. You can run it in "dry run" mode if you just want to see what changes would be made. Another tool I've used in the past is the PHPCompatiblity CodeSniffer ruleset, which only detects problems. I don't know what it's like now but last time I checked it didn't have particularly good coverage for recent versions. There's stickies on their issue repo showing known changes that are uncovered. More on reddit.com
๐ŸŒ r/PHPhelp
6
1
January 19, 2024
People also ask

What can the WP Engine PHP Compatibility Checker be used for?
The WP Engine PHP Compatibility Checker can be used by any WordPress website on any web host to check PHP version compatibility.
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instawp.com
instawp.com โ€บ plugin โ€บ php-compatibility-checker
Check PHP Version Compatibility for WordPress Websites | PHP ...
Can the plugin detect runtime compatibility issues?
No, the plugin does not execute theme and plugin code, so it cannot detect runtime compatibility issues.
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instawp.com
instawp.com โ€บ plugin โ€บ php-compatibility-checker
Check PHP Version Compatibility for WordPress Websites | PHP ...
What information does the compatibility report provide?
The compatibility report provides a list of compatibility issues categorized into errors and warnings. It includes the file and line number of the offending code, as well as information about why that line of code is incompatible with the chosen version of PHP. The plugin also suggests updates to themes and plugins.
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instawp.com
instawp.com โ€บ plugin โ€บ php-compatibility-checker
Check PHP Version Compatibility for WordPress Websites | PHP ...
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WordPress
wordpress.org โ€บ plugins โ€บ plugin-compatibility-checker
Plugin Compatibility Checker โ€“ WordPress plugin | WordPress.org
December 22, 2025 - The Plugin Compatibility Checker helps you keep your WordPress site stable and secure by scanning installed plugins for PHP and WordPress version compatibility.
Rating: 3.8 โ€‹ - โ€‹ 8 votes
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WP Engine
wpengine.com โ€บ home โ€บ solutions โ€บ php compatibility checker by wp engine
PHP Compatibility Checker by WP Engine
August 18, 2020 - The WP Engine PHP Compatibility Checker is a plugin that can be installed on any WordPress site (not just WP Engine sites), and tells you what version of PHP your site is compatible with.
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Pressable
pressable.com โ€บ home โ€บ blog โ€บ wordpress php compatibility guide
WordPress PHP Compatibility Guide
August 15, 2024 - Learn how to master WordPress PHP compatibility with our guide that provides insights on versions, challenges, and troubleshooting issues.
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Diginatives
diginatives.io โ€บ home โ€บ best php compatibility checker plugins for wordpress and cms platforms
Best PHP Compatibility Checker Plugins for WordPress and CMS Platforms - Diginatives
September 4, 2025 - A PHP Compatibility Checker scans your website for potential issues. This helps developers fix problems before upgrading. Without checking compatibility, your website may crash or show unexpected errors.
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GitHub
github.com โ€บ wpengine โ€บ phpcompat
GitHub - wpengine/phpcompat: WordPress Plugin: PHP Compatibility Checker ยท GitHub
WordPress Plugin: PHP Compatibility Checker. Contribute to wpengine/phpcompat development by creating an account on GitHub.
Starred by 122 users
Forked by 41 users
Languages ย  PHP 57.1% | JavaScript 29.5% | Makefile 7.8% | SCSS 5.6%
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InstaWP
instawp.com โ€บ plugin โ€บ php-compatibility-checker
Check PHP Version Compatibility for WordPress Websites | PHP Compatibility Checker
December 20, 2023 - The WP Engine PHP Compatibility Checker is a WordPress plugin that checks the compatibility of your PHP version with your theme and plugin code. It provides a report of compatibility issues and suggests updates for themes and plugins.
Rating: 2.7 โ€‹ - โ€‹ 130 votes
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Wetopi
wetopi.com โ€บ php-8-wordpress-compatibility
PHP 8 WordPress Compatibility Best Practices - Wetopi
December 27, 2024 - If you intend to address a compatibility test of a WordPress site, with all its plugins and themes, in this case, the best PHP 8 compatibility checker you can find is a test environment running with an exact copy of your production WordPress site.
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phpcompat
wpengine.github.io โ€บ phpcompat
PHP Compatibility Checker | phpcompat
The WP Engine PHP Compatibility Checker can be used by any WordPress website on any web host to check PHP version compatibility.
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WP Rocket
wp-rocket.me โ€บ home โ€บ blog โ€บ page speed and caching โ€บ how to check and update your wordpress php version easily
How to Check and Update Your WordPress PHP Version Easily
January 19, 2026 - Contact the authors of your theme and plugins to check for any known issues with specific PHP versions. Scan your site using a plugin like the Plugin Compatibility Checker to check if ...
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Seravo
seravo.com โ€บ docs โ€บ man โ€บ wp-php-compatibility-check
Seravo.com Docs : wp-php-compatibility-check
wp-check-passwords - Checks the strengths of WordPress user passwords. Shows a warning if a user has a weak password. ... wp-check-php-compatibility - Check that the PHP code of the current WordPress installation, including themes and plugins, is compatible with the PHP specified.