YAPIG Installation

Follow this simple steps:

    Modify config.php file and at least:

  1. Upload/Copy all files and directories contained in the tar.gz package.
  2. Modify directory permissions of $BASE_DIR (='photos/' as default) and set them 777 (drwxrwxrwx)
  3. Give YaPiG's root directory 777 permissions.
  4. For each new gallery follow this steps:
    1. Create a new subdirectory in $BASE_DIR (= "photos/" as default).
    2. Set permissions to 777 of that directory.
    3. Fill in the admin page the ADD NEW GALLERY FORM.


Most of problems are related to file permissions or file access. If you are a new YaPiG's user, I recommend to use default values at first (not modifying config.php, just commenting $STOP line as said above), and then customize YaPiG. Once you have finished your probes, do not forget to change $USER and $PASSWORD

GD library problems

YaPiG requires the version 2 of the GD library to work. This library is a extension with some functions for handling images (creation, load, modify...). It is included in the standard PHP suite but many web hosting providers disable it. YaPiG will try to load it automatically if available.

Possible problems related with this are:

  1. Your GD library is 1.x If you are the server admin you must update your gd library or your PHP version, as you prefer. If you are using a web hosting you have two options. The first one is to change your web hosting provider to other that has the version 2.0 of this library, and the second one is to contact your system administrator and expose your problem.
  2. Dynamic extension load function not available. If you reach this message during installation of YaPiG this will be because your server does not load GD library as default and YaPiG tries to load it but your server administrator has disabled the use of this function. Again, contact him or change your web provider. If you are using your own server, then edit php.ini file and set this directive as follows: enable_dl = On
  3. GD library not loaded. This problem appears when YaPiG tries to load the GD library and it is not available on your server. The solutions, once again, are contact your administrator or change your web provider.

If you are the server admin, loading the GD library automatically when you start your web server is very easy. Search your php.ini file. Then open it and search for this line:

   ;extension=gd.so        <-- Linux/Unix/Mac Systems
   ;extension=php_gd2.dll  <-- Windows Systems

Then remove the ";" character and restart your web server. If this line does not exist add it.

For more information about this directive read the PHP manual

In some rare cases extensions might not be good configured by default. If this happends you might get this error running YaPiG:

    Unknown(): unable to load dynamic library './php_gd2.dll' - The specified
    module could not be found.

If this occurs, search the file php_gd2.dll (on Unix/Mac the file is called gd.so) and then on your php.ini change this directive to the correct value:

  ; Directory in which the loadable extensions (modules) reside.
  extension_dir = ./extensions/
  ; This path is relative to php.exe on windows systems.

If you have any other problem during installation of using YaPiG, please read FAQ documentation. If your problem is not contempled there go to YaPiG's forums. Before posting check if any other user had the same problem, and please include your operating system and yapig version. Thank you.


During YaPig installation it is created a file called global-gen.php on YaPiG's root directory. For reinstalling, just delete this file. Obviously, if you do this you will need to create all galleries you have again.


Upgrading from a version to other it is not automatically done, so you have to do it manually and some versions are incompatible with others. All 0.8x are compatible. A simple way to upgrade yapig is replace all source files included in the yapig package except config.php. In these versions the template has not been modified (only for repairing little minor bugs) so if you modified them don't worry, you won't lost this work, because is not neccessary to replace these files.