Title: undefined function?!
Last modified: August 18, 2016

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# undefined function?!

 *  [stimuli](https://wordpress.org/support/users/stimuli/)
 * (@stimuli)
 * [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/)
 * Okay, I’m writing a plugin (ajax Contact form) and I’m curious why many supporting
   files report ‘call to undefined function: get_option()’
 * What the heck? get_option is a wp global, no? It works in one php file but not
   in another. I though maybe everything had to be in the root plugin directory 
   else it can’t call globals, but that made no difference either.
 * I’ve tried the plugin on my site and locally on my mac using MAMP and they bork
   at the same php files.
 * What gives?
 * Sorry if it’s a n00b question, but I’ve googled high and low and have yet to 
   find an answer, and it’s the second project that’s hit the wall because of this
   error.
 * In short: globals work fine except in some files.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [yosemite](https://wordpress.org/support/users/yosemite/)
 * (@yosemite)
 * [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/#post-411282)
 * Missing an include, perhaps? Using shorthand?
 *  Thread Starter [stimuli](https://wordpress.org/support/users/stimuli/)
 * (@stimuli)
 * [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/#post-411554)
 * What sort of include would I need for a plugin script to call global functions?
   
   Aren’t global functions available across scripts?
 * `/* Grab our stored default options */
    $acf_subject = get_option('acf_subject');
   $acf_success_msg = get_option('acf_success_msg'); $yourName = get_option('acf_name');
   $yourEmail = get_option('acf_email');
 * What do I need to call get_option(‘blah’) without it breaking? Why does it work
   in the main script but not sub-scripts?
 * Gah! 😉
 *  Thread Starter [stimuli](https://wordpress.org/support/users/stimuli/)
 * (@stimuli)
 * [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/#post-411721)
 * Okay, as a last ditch effort, I’m posting my ajaxContact plugin code for all 
   of your persual: [http://www.stimuli.ca/random/code/ajaxContact_WTF.zip](http://www.stimuli.ca/random/code/ajaxContact_WTF.zip)
 * If you see any glaring errors, let me know. This isn’t the first time I’ve had
   this call to undefined function thing happen… it’s hindering my plugins’ development.
 * Any help is appreciated. I’m at a total loss. My only strategy now is to put 
   ALL code, js, etc in one, mammoth, confusing php file.
 *  Thread Starter [stimuli](https://wordpress.org/support/users/stimuli/)
 * (@stimuli)
 * [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/#post-411731)
 * Alrighty, problem solved. I simply didn’t understand the structure of a plugin.
 * I resolved my woes by having all functions in my main plugin file. Other scripts,
   in the plugin folder, when called independantly, do not share WP’s global functions,
   nor your main script’s functions. This is why I got errors of function “blah”
   not found.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘undefined function?!’ is closed to new replies.

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 4 replies
 * 2 participants
 * Last reply from: [stimuli](https://wordpress.org/support/users/stimuli/)
 * Last activity: [19 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-3/#post-411731)
 * Status: not resolved

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