You wouldn’t want to run Windows 98 or Mac OS 9 on a brand new computer, right? Those versions of the software are old and unsupported. Like operating systems or other software, previous versions aren’t supported forever. Perhaps more importantly, new versions of the software also repair security issues. Each version offers new features but it also offers stability improvements and fixes bugs. Why does the version number matter?īecause WordPress is built on PHP, that means that the version of PHP you use is as important as the version of WordPress you use. This is a function possible in WordPress that isn’t possible in regular PHP. For example, you can use the code get_footer() to display the contents of a page’s footer. The Codex offers WordPress developers a set of functions to make theme and plugin development easier. WordPress is written in PHP, and WordPress offers developers what is known as the WordPress Codex. What does this mean? Well, sites on the internet can be written in one of several programming languages. From a development standpoint, however, WordPress is not only a content management system but also a custom library of PHP functions. PHP: The language of WordPressįrom a user standpoint, WordPress is, at its core, a custom interface to help you build a website much more easily than you can from scratch.

Let’s take a closer look at what PHP is, how to tell what version you’re running, why it matters, and how to upgrade. One of those things is the version of PHP your website is running. You might be wondering why WordPress cares what version of PHP you run or what that even is. On your Dashboard, you’ll see a warning if your website has a technical issue that needs to be addressed. Beginning with WordPress 5.2, WordPress introduced the Site Health Check.

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