How can objects of PHP classes be instantiated and accessed in included files within a PHP application structure that includes templates and modules?

When including files within a PHP application structure that uses templates and modules, it's important to instantiate objects of PHP classes in a way that allows them to be accessed across different files. To achieve this, you can create a separate file for class definitions and include it in all necessary files to ensure consistency. Then, instantiate the objects at the beginning of the main file or template where they will be used, allowing them to be accessed in included files as needed.

// class_definitions.php
class MyClass {
    public function myMethod() {
        // Method implementation
    }
}

// main_template.php
include 'class_definitions.php';
$object = new MyClass();

// included_file.php
include 'class_definitions.php';
$object->myMethod();