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Pressready Tool Scans WordPress Sites for PHP 8.4 Upgrade Conflicts Before They Occur

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WordPress developers upgrading to PHP 8.4 often face site-breaking errors caused by deprecated or removed functions in third-party plugins and themes. A open-source tool called Pressready performs static analysis across an entire WordPress installation to identify compatibility issues before any upgrade is attempted. It checks both PHP language changes and WordPress core API deprecations in a single pass, using PHPCompatibility and a custom PHP_CodeSniffer ruleset. Findings are categorised by severity — fatal errors that will crash the site, risky behaviour changes, and softer deprecations — allowing developers to prioritise fixes. A matrix mode lets users scan a range of PHP versions at once, pinpointing exactly which version first introduces a breaking change for their specific codebase.

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