# Php function Errors

**URL:** https://forum.kirupa.com/t/php-function-errors/174347
**Category:** Uncategorized
**Created:** [January 4, 2006, 10:28pm UTC](https://forum.kirupa.com/t/php-function-errors/174347 "2006-01-04T22:28:39Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ViperBlaze](https://avatars.discourse-cdn.com/v4/letter/v/7feea3/32.png) [@ViperBlaze](https://forum.kirupa.com/u/ViperBlaze)
#### Post date: [January 4, 2006, 10:28pm UTC](https://forum.kirupa.com/t/php-function-errors/174347/1 "2006-01-04T22:28:39Z")

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For some reason, I keep getting this error,

**Fatal error** : Call to undefined function

but I know I’ve defined the functions in a file called scripts.php, and I included them in my index.php.  
I dont think the problem is in the scripts, because they’ve been working for a while now, but recently I got these two messages,

Warning: Unknown(): write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save\_path is correct (/tmp) in Unknown on line 0

after refreshing the page a few time, I got the Fatal Error Message. Does anyone know what is causing it and how I can fix it?