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1. Niteblade
   Member
   Posted 3 years ago #

   Hello.

   I just upgrade from v2.5.1 -> 2.7 without problems. The database upgraded fine, and to prove this, if I enter my URL to /upgrade.php directly, I see the message "No Upgrade Required Your WordPress database is already up-to-date!"

   My homepage renders correctly; that is, the blog is working, and all my posts are present and are in-tact. Now, the problem I have is that I cannot access the /wp-admin/ menu. When I attempt to access /wp-admin/ I see the error message Fatal error: Call to undefined function wp_reset_vars() in /public_html/wp-admin/admin.php on line 39. However, I can access /wp-login.php directly ... but when I attempt to login through the wp-login.php file, I see the same error message.

   I have uploaded and re-uploaded the contents of /wp-admin and /wp-includes using ASCII mode (FLASHFXP) twice, and still the problem remains.

   I deleted all of my plugins, and the problem remains.

   error_log doesn't show anything (which is strange b/c I'm getting the above error message) ... I'm on a dedicated server.

   My .htaccess is fine

   <IfModule mod_rewrite.c>
   AddDefaultCharset UTF-8
   RewriteEngine On
   RewriteBase /
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteRule . /index.php [L]
   </IfModule>

   Any recommendations? I don't see how my theme would effect admin.php.

2. thomascim
   Member
   Posted 2 years ago #

   I was having the same problem after transferring to a different server.

   The 'wp_reset_vars' function is defined in 'wp-admin/includes/misc.php'

   In my particular situation this file was not transferred correctly and after correcting that by transferring it again everything went back to normal.

3. CandisLynn
   Member
   Posted 2 years ago #

   I am having the exact same problem as Niteblade. I tried thomascim's advice but it did not resolve the issue. Does anyone have an update on this issue?

   Thanks,
   Candis

4. unreal4u
   Member
   Posted 2 years ago #

   Try deactivating APC; I had the exact same error, once i de-activated APC (in php.ini :
   

   extension=apc.so
   apc.enabled=0

   )

   it worked smoothly :)

   Greetings ;)

   UPDATE:

   Credits

   In your APC conf:

   Update 2 (SOLUTION): This seems promising. In php.ini in the [apc] section I set apc.filters = wp-cache-config which should exclude wp-cache-config.php and wp-cache-config-sample.php from being cached by APC.

5. william_eb
   Member
   Posted 2 years ago #

   hello! I have the same problem with Call to undefined function wp_reset_vars ()
   you managed to resolve?
   I can not open the administrative panel, there is some way for this?

6. Phlux0r
   Member
   Posted 2 years ago #

   What worked for me on OS X Snow Leopard with PHP 5.3 and APC enabled was (in php.ini):
   [apc]
   apc.include_once_override=0

   HTH

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