<?php if ( ! defined( 'ABSPATH' ) ) { die(); } function w3tc_old_php_message() { $m = __( 'Please update your PHP. <strong>W3 Total Cache</strong> requires PHP version 5.6 or above', 'w3-total-cache' ); return $m; } function w3tc_old_php_activate() { echo esc_html( w3tc_old_php_message() ); exit(); } function w3tc_old_php_admin_notices() { ?> <div class="notice error notice-error"> <p><?php echo esc_html( w3tc_old_php_message() ); ?></p> </div> <?php } add_action( 'admin_notices', 'w3tc_old_php_admin_notices' );