Title: Warning: preg_replace() [function.preg-replace]:
Last modified: August 18, 2016

---

# Warning: preg_replace() [function.preg-replace]:

 *  [elnlfk](https://wordpress.org/support/users/elnlfk/)
 * (@elnlfk)
 * [18 years, 12 months ago](https://wordpress.org/support/topic/warning-preg_replace-functionpreg-replace/)
 * Right after I installed new smilies I started recieving this message on every
   page:
 * Warning: preg_replace() [function.preg-replace]: Empty regular expression in /
   home2/rainbowb/public_html/emma/wp-includes/formatting.php on line 647
 * I checked wp-includes/formatting.php’s like 647 but couldn’t find anything wrong.
   Could someone please help me?
 * I’m using version 2.1.3 btw.
 * Emma

The topic ‘Warning: preg_replace() [function.preg-replace]:’ is closed to new replies.

## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [elnlfk](https://wordpress.org/support/users/elnlfk/)
 * Last activity: [18 years, 12 months ago](https://wordpress.org/support/topic/warning-preg_replace-functionpreg-replace/)
 * Status: not resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics