Title: PHP error
Last modified: August 20, 2016

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# PHP error

 *  [jimitchell](https://wordpress.org/support/users/jimitchell/)
 * (@jimitchell)
 * [14 years, 1 month ago](https://wordpress.org/support/topic/php-error-21/)
 * I am running into a PHP issue. I assume that it is a result of a plug-in but 
   cannot access the Admin due to the errors (see below). Does anyone have an idea
   on how I can deactivate the plugins without having access to the admin?
 * Thanks,
    Jim
 * Warning: array_merge() [function.array-merge]: Argument #1 is not an array in/
   home/infoedre/public_html/wp-includes/cron.php on line 320
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/infoedre/public_html/wp-includes/cron.php:320) in /home/infoedre/public_html/
   wp-includes/pluggable.php on line 866

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Moderator [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * (@jdembowski)
 * Forum Moderator and Brute Squad
 * [14 years, 1 month ago](https://wordpress.org/support/topic/php-error-21/#post-2666488)
 * > Warning: Cannot modify header information – headers already sent by
 * Give this a read, it may help you sort it out.
 * [http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F)
 *  Thread Starter [jimitchell](https://wordpress.org/support/users/jimitchell/)
 * (@jimitchell)
 * [14 years, 1 month ago](https://wordpress.org/support/topic/php-error-21/#post-2666526)
 * Hi Jan,
 * Thank you. I tried everything, but with no luck. I did some info where it could
   be related to a db cache issue. I just happen to have WP Super Cache installed.
 * Thanks,
    Jim
 *  Moderator [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * (@jdembowski)
 * Forum Moderator and Brute Squad
 * [14 years, 1 month ago](https://wordpress.org/support/topic/php-error-21/#post-2666548)
 * Normally I’d say deactivate all of your plugins but with WP Super Cache give 
   this a read first for gotchas regarding deactivating that plugin.
 * [http://wordpress.org/extend/plugins/wp-super-cache/other_notes/](http://wordpress.org/extend/plugins/wp-super-cache/other_notes/)
 * Once you’ve read and understood those steps, give this a read for [disabling your plugins](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
   when you don’t have admin access.
 * And as usual, consider backing up the whole works _first_. 😉
 * [http://codex.wordpress.org/WordPress_Backups](http://codex.wordpress.org/WordPress_Backups)
   
   [http://codex.wordpress.org/Backing_Up_Your_Database](http://codex.wordpress.org/Backing_Up_Your_Database)
   [http://codex.wordpress.org/Restoring_Your_Database_From_Backup](http://codex.wordpress.org/Restoring_Your_Database_From_Backup)
 * With the plugins turned off, see if you can get into the admin pages.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘PHP error’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * Last activity: [14 years, 1 month ago](https://wordpress.org/support/topic/php-error-21/#post-2666548)
 * Status: not resolved

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