Title: Warning: array_key_exists() expects parameter 2 to be array…
Last modified: August 22, 2016

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# Warning: array_key_exists() expects parameter 2 to be array…

 *  [Mike Matenkosky](https://wordpress.org/support/users/hikinmike/)
 * (@hikinmike)
 * [11 years, 7 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-1/)
 * I just re-activated this plugin and I’m seeing this above the post type source:
 * > Warning: array_key_exists() expects parameter 2 to be array, null given in /
   > home/xxxxxxx/www/www/wordpress/wp-content/plugins/simple-image-sizes/templates/
   > options-media.php on line 88
 * I disabled this plugin: [https://wordpress.org/plugins/wordpress-simple-paypal-shopping-cart/](https://wordpress.org/plugins/wordpress-simple-paypal-shopping-cart/)
   and it went away.
 * [https://wordpress.org/plugins/simple-image-sizes/](https://wordpress.org/plugins/simple-image-sizes/)

The topic ‘Warning: array_key_exists() expects parameter 2 to be array…’ is closed
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 * ![](https://ps.w.org/simple-image-sizes/assets/icon-256x256.jpg?rev=3506203)
 * [Simple Image Sizes](https://wordpress.org/plugins/simple-image-sizes/)
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 * 0 replies
 * 1 participant
 * Last reply from: [Mike Matenkosky](https://wordpress.org/support/users/hikinmike/)
 * Last activity: [11 years, 7 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-1/)
 * Status: not resolved