Title: Warning: array_key_exists() expects parameter 2 to be array
Last modified: February 17, 2022

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

 *  [thingsym](https://wordpress.org/support/users/thingsym/)
 * (@thingsym)
 * [4 years, 3 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-10/)
 * Hi [@kanakogi](https://wordpress.org/support/users/kanakogi/).
 * The warning error is now displayed in Version 1.2.0.
 * Warning: array_key_exists() expects parameter 2 to be array, null given in /var/
   www/html/wp-content/plugins/wp-theme-test/classes/class.core.php on line 54
 * Thank you.

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 * 0 replies
 * 1 participant
 * Last reply from: [thingsym](https://wordpress.org/support/users/thingsym/)
 * Last activity: [4 years, 3 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-10/)
 * Status: not resolved