#225 – Milan Petrović on the Risks of Legacy PHP in WordPress and Why Upgrading Matters for Security

#225 – Milan Petrović on the Risks of Legacy PHP in WordPress and Why Upgrading Matters for Security

July 15, 2026 · 35 min

About this episode

Milan Petrović discusses the risks of using outdated PHP in WordPress and the importance of upgrading for security and performance.

Today, I'm joined by Milan Petrović, and the podcast is focused on the impact of PHP versioning in the WordPress ecosystem, emphasising the risks of running outdated PHP and the security and performance benefits of PHP 8.x. We get into the challenge of supporting legacy code versus urging progress toward modern standards. And the importance of developers, hosting companies, and end users being proactive about updates. We talk about tools like the Vulnerability Lab plugin which demonstrate real-world effects of outdated PHP and highlighted the need for gradual, community-driven improvements to ensure both security and stability.

People in this episode

Host: WordPress Tavern

Guest: Milan Petrović

Topics covered

Keywords

Mentioned in this episode

Organizations: WordPress, Vulnerability Lab

Products: PHP 8.x

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