A lot of users have experience getting errors on their Revolution Slider plugin after updating to PHP 7. Mine was the
Uncaught Error: [] operator not supported for strings in /../plugins/revslider/inc_php/framework/base_admin.class.php:72 Stack trace: #0
I can’t access the backend once PHP7 has been enabled with the Revolution Slider plugin active. Once deactivated, I was able to login on the backend but I can’t activate the plugin anymore.
The pissue has been fixed by going to the /wp-content/plugins/revslider/inc_php/framework/ folder path and edited the base_admin.class.php.
private static $arrMetaBoxes = ''; //option boxes that will be added to post
to
private static $arrMetaBoxes = array(); //option boxes that will be added to post
