{"id":467,"date":"2026-08-18T09:00:00","date_gmt":"2026-08-18T09:00:00","guid":{"rendered":"https:\/\/gaugehosting.com\/blog\/index.php\/2026\/08\/18\/understanding-php-versions-and-website-compatibility\/"},"modified":"2026-08-18T09:00:00","modified_gmt":"2026-08-18T09:00:00","slug":"understanding-php-versions-and-website-compatibility","status":"publish","type":"post","link":"https:\/\/gaugehosting.com\/blog\/index.php\/2026\/08\/18\/understanding-php-versions-and-website-compatibility\/","title":{"rendered":"Understanding PHP Versions and Website Compatibility"},"content":{"rendered":"<p>PHP is a server-side programming language used by many websites. The PHP version affects which language features are available and which application code can run.<\/p>\n<h2>Before Upgrading<\/h2>\n<ul>\n<li>Review your CMS requirements.<\/li>\n<li>Check theme and plugin requirements.<\/li>\n<li>Look for deprecated functions in custom code.<\/li>\n<li>Confirm required PHP extensions.<\/li>\n<li>Take a complete backup.<\/li>\n<\/ul>\n<h2>Test First<\/h2>\n<p>If possible, switch a staging copy to the target PHP version. Test important pages, administration, forms, scheduled tasks, and application logs.<\/p>\n<h2>Common Symptoms<\/h2>\n<p>Blank pages, HTTP 500 responses, and undefined-function errors can indicate compatibility problems, although they have other possible causes. Check the error log before assuming PHP is responsible.<\/p>\n<p>Keep the runtime on a supported release and plan upgrades before security support ends.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP is a server-side programming language used by many websites. The PHP version affects which language features are available and which application code can run. Before Upgrading Review your CMS requirements. Check theme and plugin requirements. Look for deprecated functions in custom code. Confirm required PHP extensions. Take a complete backup. Test First If possible, [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":468,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-hosting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding PHP Versions and Website Compatibility - Web Hosting Guides, Tutorials &amp; Tips | GaugeHosting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gaugehosting.com\/blog\/index.php\/2026\/08\/18\/understanding-php-versions-and-website-compatibility\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Understanding PHP Versions and Website Compatibility - Web Hosting Guides, Tutorials &amp; Tips | GaugeHosting\" \/>\n<meta property=\"og:description\" content=\"PHP is a server-side programming language used by many websites. 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