Title: PHP Error line 491
Last modified: August 21, 2016

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# PHP Error line 491

 *  [d.](https://wordpress.org/support/users/pxlar8/)
 * (@pxlar8)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/php-error-line-491/)
 * My server logs have just started showing several instances of this new error:
 * PHP Warning: preg_replace(): Unknown modifier ‘/’ in /[path]/wp-content/plugins/
   subheading/subheading.php on line 491
 * WP 3.8.1 / Subheading 1.7.3
 * [https://wordpress.org/plugins/subheading/](https://wordpress.org/plugins/subheading/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [freejoe76](https://wordpress.org/support/users/freejoe76/)
 * (@freejoe76)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/php-error-line-491/#post-4599638)
 * The plugin page says it’s “Compatible up to: 3.6.1” … I’m working against that
   as well.
 *  [freejoe76](https://wordpress.org/support/users/freejoe76/)
 * (@freejoe76)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/php-error-line-491/#post-4599726)
 * …
 *  [thaikolja](https://wordpress.org/support/users/thaikolja/)
 * (@thaikolja)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/php-error-line-491/#post-4599787)
 * You can try my plugin which has more or less the same functions until the issue
   has been fixed by the author: [https://wordpress.org/plugins/secondary-title/](https://wordpress.org/plugins/secondary-title/)

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘PHP Error line 491’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/subheading_f4f4f4.svg)
 * [SubHeading](https://wordpress.org/plugins/subheading/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/subheading/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/subheading/)
 * [Active Topics](https://wordpress.org/support/plugin/subheading/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/subheading/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/subheading/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [thaikolja](https://wordpress.org/support/users/thaikolja/)
 * Last activity: [11 years, 8 months ago](https://wordpress.org/support/topic/php-error-line-491/#post-4599787)
 * Status: not resolved