Include external php inside Wordpress Header

Question

I am trying to do something simple but it won't work.

I have a custom Wordpress header. I need to include external php classes and other stuff. The problem is that if I do that the page breaks, it doesn't work anymore.

This doesn't occur when I try to "require" external php scripts inside page templates. The problem occurs when I include it in the header .

To make it shorter, I have: header-home.php (standard wordpress theme header file, which has to include the following file)

snippets.php (a php class)

header.home.php is located at /wp-content/themes/twentyseventeen-child/templates...

snippets.php is located at /resources/scripts/snippets.php

Perhaps the header loads something that is not compatible with custom inclusions?

I was able to include an external php file which contains pure html elements. If I try to load custom classes, the page simply breaks. The include filepath is correct, so that's not the problem.

Answer 1

All the files that you are going to require, you must do in the file "functions.php" that is in "/wp-content/themes/twentyseventeen-child/functions.php", then in the file "header.php" you can instantiate your objects or call functions. For example:

Functions.php

<?php
require("./YourClass.php"); 

function getYourClass() {
  $yourClass = new YourClass();
  var_dump($yourClass); //Verify if it returns data and then delete this line
  return $yourClass;
}

Header.php

getYourClass();//Here it brings the object and shows the output.