module

Once you get into serious Drupal module development, you'll realize that it would be really helpful if you could do several things during the module development process, including clearing the cache, rebuilding the menus, error logging (logging errors to a file, in particular), and so on. Fortunately, with Drupal's really large developer ecosystem, other Drupal programmers have already created some great modules to help you along in the coding process.

Here's a list of the Drupal developer modules I currently use, or have used.

This page serves as an index to all of my Drupal module, form, and databases tutorials and examples. In an effort to help supplement the documentation on the Drupal.org website, over time I hope to have good examples for every Drupal module and form problem you'll run into.

Just a quick note here to share a Drupal get user id (uid) function. I've found that when I'm developing a Drupal module or Drupal application, I often need to access the user id, so I created this simple function and include it in a common utilities module:

# return the current drupal user id (uid)
function get_user_id() {
  global $user;
  return $user->uid;
}

As you can see, the code accesses the global Drupal user object ($user), then gets the uid from the user object.

While installing the PHP APC opcode cache, I just ran into the following error:

PHP Warning:  PHP Startup: Unable to load dynamic library './apc.so' - ./apc.so: 
cannot open shared object file: No such file or directory in Unknown on line 0

I found this error message in my PHP error log, but depending on your configuration I think it may also be in your Apache error log file.

Drupal fieldset FAQ: What is the syntax to make a Drupal fieldset (form fieldset) collapsible?

To make a Drupal form fieldset collapsible, just add the "#collapsible" attribute to your Drupal form definition, like this: