Title: Fatal error: call to undefined function…etc.
Last modified: August 18, 2016

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# Fatal error: call to undefined function…etc.

 *  [phisch](https://wordpress.org/support/users/phisch/)
 * (@phisch)
 * [20 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-functionetc/)
 * I tweaked my index.php page very slightly (removed a graphic) and then started
   getting this error:
 * Fatal error: Call to undefined function: get_header() in /home/inthatn/public_html/
   food/index.php on line 1
 * It was working just fine and WP was installed a few days ago. I copied the code
   from a different index.php file (untouched and therefore should be ok). Still
   not working. From browsing this topic in the forums I thought maybe I should 
   run /wp-admin/upgrade.php but still not working.
 * Any ideas? Oddly enough, I can get into the admin section which I’ve had open
   in a browser all day. I don’t want to shut off the computer because I’m afraid
   I won’t be able to get it back!

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

 *  [Kafkaesqui](https://wordpress.org/support/users/kafkaesqui/)
 * (@kafkaesqui)
 * [20 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-functionetc/#post-277553)
 * This “different index.php”… where exactly does it derive from?
 * In any case, using WordPress 1.5.x, the index.php in your blog’s root should 
   look something like this:
 * `<?php
    define('WP_USE_THEMES', true); require('./wp-blog-header.php'); ?>
 * All the rest, such as functions like get_header(), should reside in your theme’s
   index.php, and not the blog’s root one.
 *  Thread Starter [phisch](https://wordpress.org/support/users/phisch/)
 * (@phisch)
 * [20 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-functionetc/#post-277556)
 * Thank you, thank you, thank you!
 * Until you posted that I hadn’t noticed there were 2 index.php files and I wrote
   over the one that’s in the root directory with the one that was from the themes
   directory.
 * All’s well and again many thanks.
 * (a BIG thanks to the WP volunteer community! you’re awesome and I don’t think
   you get enough thank yous)

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

The topic ‘Fatal error: call to undefined function…etc.’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [phisch](https://wordpress.org/support/users/phisch/)
 * Last activity: [20 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-functionetc/#post-277556)
 * Status: not resolved

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