Title: array_key_exists() expects parameter 2 to be array
Last modified: October 15, 2018

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# array_key_exists() expects parameter 2 to be array

 *  Resolved [Didier77](https://wordpress.org/support/users/didier77/)
 * (@didier77)
 * [7 years, 6 months ago](https://wordpress.org/support/topic/array_key_exists-expects-parameter-2-to-be-array-2/)
 * Hello,
 * With version 3.9.0, I have a warning displayed. I never got it before.
    The exact
   message is Warning: array_key_exists() expects parameter 2 to be array, null 
   given in /var/www/sda/2/7/wordpressatfree/wp-content/plugins/autoptimize/classes/
   autoptimizeExtra.php on line 640
 * Didier
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Farray_key_exists-expects-parameter-2-to-be-array-2%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [David Anderson / Team Updraft](https://wordpress.org/support/users/davidanderson/)
 * (@davidanderson)
 * [7 years, 6 months ago](https://wordpress.org/support/topic/array_key_exists-expects-parameter-2-to-be-array-2/#post-10786209)
 * Hi,
 * Wrong plugin – that message is from [https://wordpress.org/plugins/autoptimize/](https://wordpress.org/plugins/autoptimize/),
   not this one.
 * David

Viewing 1 replies (of 1 total)

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## Tags

 * [array_key_exists](https://wordpress.org/support/topic-tag/array_key_exists/)

 * 1 reply
 * 2 participants
 * Last reply from: [David Anderson / Team Updraft](https://wordpress.org/support/users/davidanderson/)
 * Last activity: [7 years, 6 months ago](https://wordpress.org/support/topic/array_key_exists-expects-parameter-2-to-be-array-2/#post-10786209)
 * Status: resolved