Title: PHP Watning in debug.log
Last modified: October 16, 2016

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# PHP Watning in debug.log

 *  [ngrudev](https://wordpress.org/support/users/ngrudev/)
 * (@ngrudev)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/php-watning-in-debug-log/)
 * Hi,
 * I have multisite. The plugin is activated separately on my sites. I have multiple
   lines with this error in my debug.log. I tried to network activate the plugin,
   but the error still occures.
 * [16-Oct-2016 13:31:12 UTC] PHP Warning: array_merge(): Argument #2 is not an 
   array in /home/lugabglj/public_html/test/bg_wp/wp-content/plugins/wp-useronline/
   scb/Options.php on line 62
 * Please for support.
 * Thank you
    Niki

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Lester Chan](https://wordpress.org/support/users/gamerz/)
 * (@gamerz)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/php-watning-in-debug-log/#post-8307093)
 * After network activate, go to the individual sites and save the changes again
   to see if that fixes the problem
 *  Thread Starter [ngrudev](https://wordpress.org/support/users/ngrudev/)
 * (@ngrudev)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/php-watning-in-debug-log/#post-8307199)
 * Hi Lester,
 * It seems that resolve the problem. I will monitor several days and mark the issu
   as “resolved” if no error occures anymore.
 * Thank you

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘PHP Watning in debug.log’ is closed to new replies.

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## Tags

 * [PHP Warning](https://wordpress.org/support/topic-tag/php-warning/)

 * 2 replies
 * 2 participants
 * Last reply from: [ngrudev](https://wordpress.org/support/users/ngrudev/)
 * Last activity: [9 years, 7 months ago](https://wordpress.org/support/topic/php-watning-in-debug-log/#post-8307199)
 * Status: not resolved