funcion guardar datos

function gym_contact_create_entry($name, $email, $phone, $message ) {
  global $wpdb;
  $table_name = $wpdb->prefix . 'contact';

  $wpdb->insert(
        $table_name,
        array(
            'name' => $name,
            'email' => $email,
            'phone' => $phone,
            'message' => $message,
            'time' => current_time( 'mysql' )
        )
    );
}

// WordPress Ajax
add_action( 'wp_ajax_gym_contact_create_entry', 'gym_contact_create_entry' );
add_action( 'wp_ajax_nopriv_my_contact', 'gym_contact_create_entry' );