ultimatemember/includes/class-dependencies.php

<?php
namespace um;

// Exit if executed directly
if ( ! defined( 'ABSPATH' ) ) exit;

/**
 * Ultimate Member Dependency Checker
 *
 * Checks if Ultimate Member plugin is enabled
 */
if ( ! class_exists( 'um\Dependencies' ) ) {
    class Dependencies {

        private static $active_plugins;


        /**
         * Get all active plugins
         */
        public static function init() {

            self::$active_plugins = (array) get_option( 'active_plugins', array() );

            if ( is_multisite() )
                self::$active_plugins = array_merge( self::$active_plugins, get_site_option( 'active_sitewide_plugins', array() ) );
        }


        /**
         * Check if UltimateMember core plugin is active
         *
         * @return bool
         */
        public static function ultimatemember_active_check() {

            if ( ! self::$active_plugins ) self::init();

            return in_array( 'ultimate-member/ultimate-member.php', self::$active_plugins ) || array_key_exists( 'ultimate-member/ultimate-member.php', self::$active_plugins );

        }


        /**
         * Check if bbPress plugin is active
         *
         * @return bool
         */
        public static function bbpress_active_check() {

            if ( ! self::$active_plugins ) self::init();

            return in_array( 'bbpress/bbpress.php', self::$active_plugins ) || array_key_exists( 'bbpress/bbpress.php', self::$active_plugins );

        }


        /**
         * Check if myCRED plugin is active
         *
         * @return bool
         */
        public static function mycred_active_check() {

            if ( ! self::$active_plugins ) self::init();

            return in_array( 'mycred/mycred.php', self::$active_plugins ) || array_key_exists( 'mycred/mycred.php', self::$active_plugins );

        }


        /**
         * Check if Woocommerce plugin is active
         *
         * @return bool
         */
        public static function woocommerce_active_check() {

            if ( ! self::$active_plugins ) self::init();

            return in_array( 'woocommerce/woocommerce.php', self::$active_plugins ) || array_key_exists( 'woocommerce/woocommerce.php', self::$active_plugins );

        }


        /**
         * @param string $extension_version Extension version
         * @return mixed
         */
        public static function ultimatemember_version_check( $extension_version ) {

            return version_compare( ultimatemember_version, $extension_version, '>=' );

        }


        /**
         * @param string $extension_version Extension version
         * @return mixed
         */
        public static function php_version_check( $extension_version ) {

            return version_compare( phpversion(), $extension_version, '>=' );

        }

    }
}


if ( ! function_exists( 'is_um_active' ) ) {
    /**
     * Check UltimateMember core is active
     *
     * @return bool active - true | inactive - false
     */
    function is_um_active() {
        return Dependencies::ultimatemember_active_check();
    }
}


if ( ! function_exists( 'is_um_version_required' ) ) {
    /**
     * Check UltimateMember core required version
     *
     * @return bool  Larger then required - true | Less than necessary - false
     */
    function is_um_version_required( $version ) {
        return Dependencies::ultimatemember_version_check( $version );
    }
}