drupal 6全局变量

forms_api_reference.html

我们知道在Magento 系统后台有支持开发人员工具，那么在Drupal中由于系统没能集成这样的开发工具，于是在社区有支持者共享了Devel工具。今个试用了一下，感觉相当不错，我个人认为胜过Magento 开发者工具。其优越性非同一般。更多详情：http://drupal.org/project/devel
Devel模块 .它主要的特性是帮助开发人员:

At each opportunity it has, the Drupal Security team tries to help share information about its processes and

There are many times when you may want your code to "impersonate" another user. An example of this is when a user takes an action that triggers another process.

It seems to be a popular approach in other web applications to process/filter the user input in the name of security.

db_rewrite_sql() provides a method for modules to extend your SQL queries. This kind of functionality is especially important to modules which control access to nodes.

Session support in PHP allows one to preserve data across subsequent accesses. A visitor accessing your website is assigned a unique ID, the so-called session ID.