Title: Unknown variable errors after moving directories
Last modified: August 20, 2016

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# Unknown variable errors after moving directories

 *  [Lailoken](https://wordpress.org/support/users/lailoken/)
 * (@lailoken)
 * [14 years, 10 months ago](https://wordpress.org/support/topic/unknown-variable-errors-after-moving-directories/)
 * I am using:
    Wordpress 3.1.3 Mysql 5.0 PHP 5.2.17
 * Site is: http:/www.fbod.net
 * I had set up my website under a subdirectory to keep it separate from the existing
   homepage. Recently I transferred everything to the main directory so that the
   WordPress site would take over as my site’s homepage. I only moved the files 
   to a new directory; The SQL database stayed the same.
 * After the move I started getting “undefined variable” errors on several of my
   plugins. I have tried deleting the existing plugins and doing a re-install, but
   nothing was fixed.
 * The weird thing is that for some of the errors I know exactly what the error 
   is and I can fix it, but I have no idea why it’s happening. An example being:
 * > Notice: Undefined variable: content in /htdocs/wp-content/plugins/wow-guild-
   > retrieve/wow-guild.php on line 127
 * Inside wow-guild.php it defines $content like this:
 * > $content .= “blahblah”;
   >  $content .= “morestuff”;
 * The error apparently comes from the fact that it doesn’t like using concatenation
   on the first definition of a variable. This is an easy fix and it kind of makes
   sense, but it is frustrating because this was never an issue until I changed 
   directories.
 * There are also similar errors that have nothing to do with concatenation and 
   I’m hoping that something I can do/undo, that I may have missed when transferring,
   will fix all of these new errors.

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

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years, 10 months ago](https://wordpress.org/support/topic/unknown-variable-errors-after-moving-directories/#post-2152404)
 * > it doesn’t like using concatenation on the first definition of a variable
 * That would be correct behaviour as variables are supposed to be defined **before**
   being used.
 *  Thread Starter [Lailoken](https://wordpress.org/support/users/lailoken/)
 * (@lailoken)
 * [14 years, 10 months ago](https://wordpress.org/support/topic/unknown-variable-errors-after-moving-directories/#post-2152483)
 * > That would be correct behaviour as variables are supposed to be defined before
   > being used.
 * Like I said, it makes sense; I get why that would cause an error. The thing is
   that I have 3 or 4 plugins with similar syntax and none of them gave me an error
   prior to changing directories.
 * Also, because there are other undefined variable errors that don’t involve concatenation
   I figured it might just be a symptom of something that I did/didn’t do rather
   than several plugins spontaneously deciding to throw out errors after months 
   of working correctly.

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

The topic ‘Unknown variable errors after moving directories’ is closed to new replies.

## Tags

 * [concatenation](https://wordpress.org/support/topic-tag/concatenation/)
 * [move](https://wordpress.org/support/topic-tag/move/)
 * [variable](https://wordpress.org/support/topic-tag/variable/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [Lailoken](https://wordpress.org/support/users/lailoken/)
 * Last activity: [14 years, 10 months ago](https://wordpress.org/support/topic/unknown-variable-errors-after-moving-directories/#post-2152483)
 * Status: not resolved

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