Title: PHP error: illegal string offset when custom css enabled
Last modified: August 21, 2016

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# PHP error: illegal string offset when custom css enabled

 *  [Kate](https://wordpress.org/support/users/kwalshucnjgmailcom/)
 * (@kwalshucnjgmailcom)
 * [11 years, 11 months ago](https://wordpress.org/support/topic/php-error-illegal-string-offset-when-custom-css-enabled/)
 * Occurs in WP admin:
 * Warning: Illegal string offset ‘chkbx_use_custom_css’ in REDACTED\wp-content\
   plugins\responsive-mobile-friendly-tooltip\responsive-tooltip-admin-page.php 
   on line 40
 * Didn’t mess with this aside from editing the settings page. Not sure if it works
   with the error. Have many plugins installed so I can’t really troubleshoot. Sorry,
   hope it helps anyway!
 * [https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/](https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/)

The topic ‘PHP error: illegal string offset when custom css enabled’ is closed to
new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/responsive-mobile-friendly-tooltip_bbad9a.
   svg)
 * [Responsive Mobile-Friendly Tooltip](https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/responsive-mobile-friendly-tooltip/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/)
 * [Active Topics](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/responsive-mobile-friendly-tooltip/unresolved/)
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 * 0 replies
 * 1 participant
 * Last reply from: [Kate](https://wordpress.org/support/users/kwalshucnjgmailcom/)
 * Last activity: [11 years, 11 months ago](https://wordpress.org/support/topic/php-error-illegal-string-offset-when-custom-css-enabled/)
 * Status: not resolved