caldera-core.php

<?php
/*
  Plugin Name: Caldera Forms
  Plugin URI: http://digilab.co.za
  Description: Easy to use, grid based responsive form builder for creating simple to complex forms.
  Author: David Cramer
  Version: 1.1.9.3
  Author URI: http://digilab.co.za
 */

//initilize plugin

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

define('CFCORE_PATH', plugin_dir_path(__FILE__));
define('CFCORE_URL', plugin_dir_url(__FILE__));
define('CFCORE_VER', '1.1.9.3');
define('CFCORE_EXTEND_URL', 'https://api.calderaforms.com/1.0/');

include_once CFCORE_PATH . 'classes/core.php';
include_once CFCORE_PATH . 'classes/widget.php';
include_once CFCORE_PATH . 'classes/sanitize.php';

// includes
include_once CFCORE_PATH . 'includes/cf-ajax/plugin.php';
include_once CFCORE_PATH . 'includes/field_processors.php';
include_once CFCORE_PATH . 'includes/custom_field_class.php';
include_once CFCORE_PATH . 'includes/filter_addon_plugins.php';

// table builder
register_activation_hook( __FILE__, array( 'Caldera_Forms', 'activate_caldera_forms' ) );

add_action( 'plugins_loaded', array( 'Caldera_Forms', 'get_instance' ) );

// Admin & Admin Ajax stuff.
if ( is_admin() || defined( 'DOING_AJAX' ) ) {

	require_once( CFCORE_PATH . 'classes/admin.php' );
	add_action( 'plugins_loaded', array( 'Caldera_Forms_Admin', 'get_instance' ) );

}