需要在drupal中创建自定义空白页面

I've installed Drupal to have a basic user registration layer. Now I need to code some PHP code in a blank page, how I can achieve this in Drupal? I need to know where I must put my PHP code.

Thanks a lot

Edit.

Basically I need Drupal only for user authorization. After a user logged into the system I want to show him a table with some data. This table was managed with JQuery.

for what you want to do I think it's not necessary a custom module, but if so, it's not so hard to do, but you can allways use some existing drupal modules mixed together to do what you want.

You will need: Display Suite and Login Redirect module

Basically I need Drupal only for user authorization. After a user logged into the system I want to show him a table with some data.

For this purpose you can use Login Redirect module to redirect user to any page you want.

Now I need to code some PHP code in a blank page, how I can achieve this in Drupal? I need to know where I must put my PHP code.

For this you can use Display Suite. Display suite or simply DS comes with a new a new Text Format: "Display Suite code". This text format allow you to add some custom code to your pages (javascript,php,etc)

You will have to create a module in order to add php code to drupal. Try this to understand better what u need to do https://drupal.org/node/1074360

you should learn to develop Drupal modules with hook_menu you can make page and with hook_form_alter you can edit registration form

but in drupal 7 you can manage registration fields and also with rules and views modules, you can manage registration and user list without PHP coding