init.php

<?php
/*
Plugin Name: Pods - Custom Content Types and Fields
Plugin URI: http://pods.io/
Description: Pods is a framework for creating, managing, and deploying customized content types and fields
Version: 2.6.11-a-1
Author: Pods Framework Team
Author URI: http://pods.io/about/
Text Domain: pods
GitHub Plugin URI: https://github.com/pods-framework/pods
GitHub Branch: 2.x

Copyright 2009-2017  Pods Foundation, Inc  (email : contact@podsfoundation.org)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/**
 * @package Pods\Global
 */

// Prevent conflicts with Pods 1.x
if ( defined( 'PODS_VERSION' ) || defined( 'PODS_DIR' ) ) {
    add_action( 'init', 'pods_deactivate_pods_1_x' );
    add_action( 'init', 'pods_deactivate_pods_ui' );
}
else {
    // Current version
    define( 'PODS_VERSION', '2.6.11-a-1' );

    // Version tracking between DB updates themselves
    define( 'PODS_DB_VERSION', '2.3.5' );

    if ( !defined( 'PODS_WP_VERSION_MINIMUM' ) ) {
        define( 'PODS_WP_VERSION_MINIMUM', '3.8' );
	}

    if ( !defined( 'PODS_PHP_VERSION_MINIMUM' ) ) {
        define( 'PODS_PHP_VERSION_MINIMUM', '5.2.4' );
	}

    if ( !defined( 'PODS_MYSQL_VERSION_MINIMUM' ) ) {
        define( 'PODS_MYSQL_VERSION_MINIMUM', '5.0' );
	}

    define( 'PODS_SLUG', plugin_basename( __FILE__ ) );
    define( 'PODS_URL', plugin_dir_url( __FILE__ ) );
    define( 'PODS_DIR', plugin_dir_path( __FILE__ ) );

    // Prevent conflicts with old Pods UI plugin
    if ( function_exists( 'pods_ui_manage' ) )
        add_action( 'init', 'pods_deactivate_pods_ui' );
    else {
        global $pods, $pods_init, $pods_form;

        require_once( PODS_DIR . 'includes/classes.php' );
        require_once( PODS_DIR . 'includes/data.php' );
        require_once( PODS_DIR . 'includes/general.php' );

        if ( !defined( 'PODS_MEDIA' ) || PODS_MEDIA )
            require_once( PODS_DIR . 'includes/media.php' );

        if ( !defined( 'SHORTINIT' ) || !SHORTINIT ) {
	        if ( pods_allow_deprecated() ) {
		        require_once( PODS_DIR . 'deprecated/deprecated.php' );
	        }

	        if ( false !== pods_compatibility_check() ) {
		        $pods_form = pods_form();

		        if ( ! is_network_admin() ) {
			        $pods_init = pods_init();
		        }

	        }

        }

    }
}

/**
 * Deactivate Pods 1.x or other Pods plugins
 */
function pods_deactivate_pods_1_x () {
    if ( defined( 'PODS_VERSION' ) && defined( 'PODS_DIR' ) && file_exists( untrailingslashit( PODS_DIR ) . '/init.php' ) ) {
        if ( !function_exists( 'deactivate_plugins' ) )
            include_once ABSPATH . 'wp-admin/includes/plugin.php';

        deactivate_plugins( realpath( untrailingslashit( PODS_DIR ) . '/init.php' ) );

        if ( !headers_sent() && ( !function_exists( 'pods_ui_manage' ) && !file_exists( WP_CONTENT_DIR . 'plugins/pods-ui/pods-ui.php' ) ) ) {
            wp_redirect( $_SERVER[ 'REQUEST_URI' ] );
            die();
        }
    }
}

/**
 * Deactivate Pods UI plugin
 */
function pods_deactivate_pods_ui () {
    if ( function_exists( 'pods_ui_manage' ) && file_exists( WP_CONTENT_DIR . 'plugins/pods-ui/pods-ui.php' ) ) {
        if ( !function_exists( 'deactivate_plugins' ) )
            include_once ABSPATH . 'wp-admin/includes/plugin.php';

        deactivate_plugins( realpath( WP_CONTENT_DIR . 'plugins/pods-ui/pods-ui.php' ) );

        if ( !headers_sent() ) {
            wp_redirect( $_SERVER[ 'REQUEST_URI' ] );
            die();
        }

    }

}