• Beyond text, b2evolution is very well suited for presenting photos, videos and other media files. There are basically 2 kinds of presentation for media content: A photoblog / media blog. In this kind of presentation you see a blog with one photo/v… more »
  • Sometimes you will need to know the ID of a particular collection in order to perform a variety of actions. This ID is an unique integer number that identifies your collection under the b2evolution instance. To locate this number please follow this ste… more »
  • When you have a slow running SELECT query, it may have 2 reasons You don’t have the proper index on your table to let the WHERE conditions filter efficiently. You have too many joins that join a lot of data before being able to discard unn… more »
  • Nowdays using UTF-8 as character encondig is almost a must. If you want to know what we are talking about please read this: UTF-8 Encoding and is you need to go a little deeper, please try with this: Unicode. No that we are in context then is good to l… more »
  • Note: on collections of type "Manual" the revision history can also be accessed from the front office by a link at the bottom of each page (for editors only). more »
  • The slug is the last part of the URL that uniquely identifies a page/resource on your b2evolution installation. For example, if you have an URL like http://www.mysite.com/cat/subcat/hello-world, in this cas the slug is hello-world. Slugs are unique wi… more »
  • I can’t upload big size pictures and graphics even though my web server has unlimited upload For upload size issues, go to Global Settings > Files > File creation options > Maximum upload filesize and setup your upload limit size. more »
  • Black thumbnails saying "Ewr-access" or ".evocache folder read/write error! Check filesystem permissions." [image:526:] [image:528:] That message means b2evolution cannot create or access the thumbnail image file or a directory to… more »
  • b2evolution (actually PHP) has no permission to create the directory needed for storing the media files belonging to a certain collection or user. Make sure all sub-directories of the `/media` folder are writable by PHP. more »
  • b2evolution restricts and validates the name of the files and directories that you can use. You can change this restriction in the Advanced options panel under the Files Settings tab. The default settings are set for maximum security and compatibility.… more »
  • This template tag displays registration link. Example <source lang="php"> user_register_link( $before = ‘’, $after = ‘’, $link_text = ‘’, $link_title = ‘#’, $disp_when_logged_in = false… more »
  • When too many large files are uploaded to the server the following error may appear: You have sent too much data (too many large files?) for the server to process. Please try again by sending less data/files at a time. To allow large amount of data upl… more »
  • In several places, b2evolution lets you select an "Image Size" a.k.a. "Thumbnail Size" for the images you display. In the name of the sizes you will find the following: type : fit will preserve the image dimensions ratio a… more »
  • PHP writes all its errors into a log file which depends on your particular setup. It will typically be called error.log. It may be a good idea to ask your web host where you can check the contents of this file. Besides this, it may be easier to have PHP… more »
  • This feature is very similar to Auto-Upgrade but it allows to pull a version of b2evolution from an SVN repository. This is only useful if you have set up an SVN repository for the development of your website. more »
  • General rule Short Answer: Yes, as a general rule, the upgrade will make changes to your database! This means it is very important to have a backup of your existing system (database and files) before performing an upgrade. This way, if something is n… more »
  • If you have 2 backups of your site and want to compare them to see what changed from one to the next, or if you want to compare a backup to your current site, here’s what you can do: Comparing files On your Linux web server command line, type:… more »
  • phpMyAdmin is a tool that lets you peek and poke directly into your MySQL database. It is a PHP application just like b2evolution, except it has nothing to do with b2evolution. Nevertheless, you can use phpMyAdmin to connect to your b2evolution database… more »
  • This is for all errors that look something like "Illegal mix of collations xxx and yyy for operation ‘=’(Errno=1267)" This is an error generated by MySQL when several fields in the database don’t match each other. This can… more »
  • User moderators have rights to delete those users data which they can edit, even if they don’t have specific permission to delete those data. more »
  • This tab lets you configure IP address ranges and specify whether they are trusted, suspect or blocked (they can also be unknown). more »
  • On your system you typically want to restrict your file permissions to the maximum for best security, but not as much as b2evolution will not be able to save uploaded or cached files any more. Optimal file permissions are basically a tradeoff between s… more »
  • Common SQL errors and how to resolve them at: mySQL docs more »
  • If you get this error, it is most likely you recently changed something in a file. The error is often caused by added whitespace (space or line feed) *before* the first <?php or *after* the closing ?>. You can remove the error by opening the f… more »
  • Short answer: your PHP is either out of memory or out of allowed execution time! more »
  • Please see the following pages: Directory And File Permissions Media File Permission Errors ((security/)) more »
  • List of all templates used by b2evolution. more »
  • How email skins work. Explanation of the /skins_email directory. more »
  • The default permissions for each group can be modified on the User Groups Tab by clicking on the group name. New groups can also be created by clicking on the "Add group" link. more »
  • In addition to being able upload a new profile picture through the Identity tab of your profile located on the main user screen, you can also navigate to the Profile Picture tab, as well. more »