If you have used Cakephp 2x then we know how to import vendor files there. In Cakephp 2x we do the following to import vendor files:

1. App::import('Vendor', 'Twitter', array('file' => 'Twitter' . DS . 'src'. DS. 'Twitter.php'));

In order to load vendor files in Cakephp 3 you need to load the files using require.

Steps to import vendor file:

i) Place library folder under your_project/vendor/

ii) include library file using require_once(ROOT . DS . 'vendor' . DS . "my_library_folder" . DS . "my_library_base_class.php") , this includes the library code file in our code.

Example: Please see the sample example below:

1. //The following line should do the same like App::import() in the older version of cakePHP

2. require_once(ROOT . 'vendor' . DS  . 'Twitter' . DS . 'src' . DS . 'twitter.php');

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