Possible bug updating users

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I am getting the following what updating a user in 5.6.0.1

Warning: Cannot modify header information - headers already sent by (output started at /var/sites/DOMAIN/public_html/concrete/core/controllers/single_pages/dashboard/users/search.php:171) in /var/sites/DOMAIN/public_html/concrete/core/libraries/view.php on line 899

Is anyone else getting this and is this something that will effect the site in any way?

ep1
 
markarydsgrafiska replied on at Permalink Reply
i am getting the exact same error when updating users
markarydsgrafiska replied on at Permalink Reply
An a bit of debugging returned a answer for me.

The sort flag for array_unique() was being used at line 171 in
/concrete/core/controllers/single_pages/dashboard/users/search.php

Here should maybe be a php version check, cause this flag is only compatible with PHP versions >5.2.9.
novologic replied on at Permalink Reply
novologic
Getting same error running PHP 5.2.6 so you may be correct will update PHP and see if this resolves the issue

Warning: Cannot modify header information - headers already sent by (output started at /home/novologic/sites/triadmechanical.com/htdocs/offers/concrete/core/controllers/single_pages/dashboard/users/search.php:171) in /home/novologic/sites/triadmechanical.com/htdocs/offers/concrete/core/libraries/view.php on line 901