Why do I have to worry about PHP if I use WordPress? Isn’t that updated by my web host?
PHP is an integral part of WordPress like cocoa is in chocolate ice cream. You see only WordPress and what it does in the front, but all this is made possible by the programming language called PHP over which WordPress core is built upon. Making sure that your host has the latest version available for use on their server, and that your WordPress installation is being pointed to that version (and not one of the older ones) is important.
Of course, your web host should ensure that they have the latest version of all software, including PHP, available for you to use on your server. But for good reasons, they won’t force your entire server to use the latest version. That’s something you or your web administrator will have to do.
So, how would you check if you have all this? Read further in my article below…
https://medium.com/@saxatwork/what-is-php-and-what-does-it-have-to-do-with-wordpress-838058a92be7