How can I get a plugin to hook ‘dbdelta_queries’ — a filter used during version update?

Must-use (mu) plugins are loaded during the version update process, unlike ordinary plugins. Explanation here. So it’s possible to hook dbdelta_queries and the related filters from within a mu plugin. (Thanks to Sergey Biryukov for the answer.) But, some plugins use the same dbDelta() function as core update, so it’s possible to get queries for … Read more

Is it safe update WordPress 3.4.2. to 3.5? [closed]

Back up all your files and database And then install wp3.5 and activate each plugin one by one and see whether they are compaitable or not OR you can install a wp3.5 in any other subdomain(domain.yoursite.com) and then activate all those plugins and see if they are compaitable or not

upgrade wordpress 2.1.2 to wordpress latest version (3.6)

In a nutshell that should be considerably straightforward, WP just couldn’t update itself in versions that far back. Codex has detailed instructions for upgrading from older versions, see Upgrading WordPress Extended. However overall it’s usual for manual update – backup, replace core files, go through upgrade dialogs.

Upgrade to 3.1.1 Fails

I had this problem and the answer was found (a) in enabling ftp to write and (b) at least temporarily setting the directories to 777 although I think the latter permissions can be improved. I run vsftp with chroot’d users. After finding no mention in apache logs, setting the permissions to 777, changing ftp group … Read more

Debug errors for “Destination directory for file streaming does not exist or is not writable”

Your problem seems to be related with a misconfiguration of the temporary directory in PHP which is used for uploads and need to be writable when the sever downloads a WordPress, plugin or theme package. If you can not configure it at PHP level, you can define it also in wp-config.php file: define(‘WP_TEMP_DIR’, ABSPATH . … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)