Title: Undefined function in wp-blog-header error
Last modified: August 19, 2016

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# Undefined function in wp-blog-header error

 *  [crazlunatic](https://wordpress.org/support/users/crazlunatic/)
 * (@crazlunatic)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/undefined-function-in-wp-blog-header-error/)
 * Hi. I’m having this specific error:
    Fatal error: Call to undefined function 
   wp() in /home/craz/public_html/wp-blog-header.php on line 18
 * What happened was I had super-cache installed and my host said it had crashed
   my site, which it did. So I went to uninstall supercache and my host removed 
   the lines inserted by super cache in .htaccess
 * Then I got this error. What should I do? I need this up as soon as possible. 
   I’ve lost about a couple thousand pageviews by now. Thanks.

Viewing 1 replies (of 1 total)

 *  [ibuildtraffic2](https://wordpress.org/support/users/ibuildtraffic2/)
 * (@ibuildtraffic2)
 * [17 years, 3 months ago](https://wordpress.org/support/topic/undefined-function-in-wp-blog-header-error/#post-716971)
 * I have the exact same error…this is an old post though, and no replies…
 * Maybe I’ll get lucky?

Viewing 1 replies (of 1 total)

The topic ‘Undefined function in wp-blog-header error’ is closed to new replies.

## Tags

 * [cache](https://wordpress.org/support/topic-tag/cache/)
 * [htaccess](https://wordpress.org/support/topic-tag/htaccess/)
 * [super cache](https://wordpress.org/support/topic-tag/super-cache/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [ibuildtraffic2](https://wordpress.org/support/users/ibuildtraffic2/)
 * Last activity: [17 years, 3 months ago](https://wordpress.org/support/topic/undefined-function-in-wp-blog-header-error/#post-716971)
 * Status: not resolved

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