<?php
/**
 * Class BackWPup_System_Requirements.
 */
class BackWPup_System_Requirements
{
    /**
     * Wp Minimum Version Required.
     *
     * @var string The minimum version required for the plugin
     */
    private static $wp_minimum_version = '3.9';

    /**
     * Php Minimum Version Required.
     *
     * @var string The minimum version required by the plugin
     */
    private static $php_minimum_version = '5.6.0';

    /**
     * Mysql Minimum version required by the plugin.
     *
     * @var string
     */
    private static $mysql_minimum_version = '5.5.0';

    /**
     * Get minimum WordPress required version.
     *
     * @return string The minimum required version of WordPress
     */
    public function wp_minimum_version()
    {
        return self::$wp_minimum_version;
    }

    /**
     * Get minimum PHP required version.
     *
     * @return string The minimum version required by the plugin
     */
    public function php_minimum_version()
    {
        return self::$php_minimum_version;
    }

    /**
     * Get minimum MYSQL required version.
     *
     * @return string The minimum version required by the plugin
     */
    public function mysql_minimum_version()
    {
        return self::$mysql_minimum_version;
    }
}