Title: Parameter warning
Last modified: August 31, 2016

---

# Parameter warning

 *  Resolved [jamesashton154](https://wordpress.org/support/users/jamesashton154/)
 * (@jamesashton154)
 * [10 years, 3 months ago](https://wordpress.org/support/topic/parameter-warning/)
 * hi i have installed above the fold and getting this error at the bottom,
 * Warning: Parameter 1 to Abovethefold_Optimization::end_buffering() expected to
   be a reference, value given in /var/sites/b/boothxperia.co.uk/public_html/wp-
   includes/functions.php on line 3464
 * how do i fix this?
 * [https://wordpress.org/plugins/above-the-fold-optimization/](https://wordpress.org/plugins/above-the-fold-optimization/)

Viewing 8 replies - 1 through 8 (of 8 total)

 *  [madittech](https://wordpress.org/support/users/madittech/)
 * (@madittech)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/parameter-warning/#post-7041724)
 * I am having the same problem. same functions environment.
 * Warning:Parameter 1 to Abovethefold_Optimization::end_buffering() expected to
   be a reference, value given in wp-includes/functions.php on line 3464.
 * and on that line I have this bit
 *     ```
       <blockquote>
       function wp_ob_end_flush_all() {
       	$levels = ob_get_level();
       	for ($i=0; $i<$levels; $i++)
       		ob_end_flush();	 (this is line 3464)
       </blockquote>
       ```
   
 *  [akincansenol](https://wordpress.org/support/users/akincansenol/)
 * (@akincansenol)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041728)
 * I have exactly the same issue on PHP7.0.4 cgi.fix=0
 * Also when I comment out in wp-includes/funtions.php 3464;
 *     ```
       function wp_ob_end_flush_all() {
       	$levels = ob_get_level();
       	for ($i=0; $i<$levels; $i++)
       		ob_end_flush();
       ```
   
 * I able to use. I think PHP7 or WP 4.4.2 core doesn’t recognize “end_buffering()”
   or something.
 * I appreciate this plugin and I would more than appreciate.
 * Thanks in advance [@optimalisatie](https://wordpress.org/support/users/optimalisatie/).
   nl
 *  Plugin Author [optimalisatie](https://wordpress.org/support/users/optimalisatie/)
 * (@optimalisatie)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041730)
 * Hi!
 * The bug was not related to PHP7 but due to stricter error reporting (possibly
   default in PHP7). The buffer was passed as reference.
 * The bug has been resolved in v2.3.5.
 * Best Regards,
    Jan Jaap
 *  [akincansenol](https://wordpress.org/support/users/akincansenol/)
 * (@akincansenol)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041731)
 * Well I update latest version and checked.
    But still getting same error on dashboard;
 * Above The Fold: Extracted CSS for URL [http://exapmle.com/](http://exapmle.com/)
   returned an invalid response.
 * If I comment out;
 *     ```
       function wp_ob_end_flush_all() {
       	$levels = ob_get_level();
       	for ($i=0; $i<$levels; $i++)
       		ob_end_flush();
       ```
   
 * in wp-includes/funtions.php. this error gone and script working well but if I
   didn’t comment out that function, not generate cli command.
 *  [akincansenol](https://wordpress.org/support/users/akincansenol/)
 * (@akincansenol)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041732)
 * With 2.3.9 same issue :/
 *  Plugin Author [optimalisatie](https://wordpress.org/support/users/optimalisatie/)
 * (@optimalisatie)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041733)
 * Hi Akincansenol,
 * Your bug report is not related to the original bug report. Can you please start
   a new topic for it?
 * I am suspecting in your case that a full page cache plugin is the cause. Please
   list any full page cache plugins that you use if you are using any.
 * Best Regards,
    Jan Jaap
 *  [akincansenol](https://wordpress.org/support/users/akincansenol/)
 * (@akincansenol)
 * [10 years, 1 month ago](https://wordpress.org/support/topic/parameter-warning/#post-7041748)
 * Just Redis Object Cache + Autoptimize plugin
 *  [airenim](https://wordpress.org/support/users/airenim/)
 * (@airenim)
 * [9 years, 11 months ago](https://wordpress.org/support/topic/parameter-warning/#post-7041763)
 * do u have any video for u r best settings

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘Parameter warning’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/above-the-fold-optimization_fcfbf6.
   svg)
 * [Page Speed Optimization](https://wordpress.org/plugins/above-the-fold-optimization/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/above-the-fold-optimization/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/above-the-fold-optimization/)
 * [Active Topics](https://wordpress.org/support/plugin/above-the-fold-optimization/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/above-the-fold-optimization/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/above-the-fold-optimization/reviews/)

 * 8 replies
 * 5 participants
 * Last reply from: [airenim](https://wordpress.org/support/users/airenim/)
 * Last activity: [9 years, 11 months ago](https://wordpress.org/support/topic/parameter-warning/#post-7041763)
 * Status: resolved