Using Template Files with Wordpress 5.0 Guttenberg

How to Stop Fearing Your Own Database   

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The big stuff is coming, but first we need to simply make use of Template files in Wordpress. To put it simply, this is a php file that uses the header and footer parts of your WP site, but allows you to custom code all the middle content of a particular post or page. You will also see how to keep using that usual page content with a template file. So you could add custom PHP code above or below that.