Converting to Drupal

Hello everyone,
I have this php script that was originally meant to fetch data from a Joomla database and send it back to my application. It is very short, and I am having trouble figuring out the correct Drupal API methods to get it working properly. Would appreciate if someone could take a look, and possibly provide some input. Thank you very much for your time. Here's the script:

Hi to everyone,
i am new to drupal community and i have to tell you that i'm about to rebuild a big website from joomla 3.2 & K2 2.6.7 to drupal 7, but i have some questions to ask you and i hope you could answer them. Unfortunately i realized that joomla has big problems with websites that use many menu items. Modules cannot be saved when you click in the menu assignment "all pages" in the administrator panel.

Hello Drupal community,

HI,
I am building an ecommerce website, where I have mostly product marketing related information and need to translate the product content to various languages. Most of them suggested me to go for PIM (PRODUCT INFORMATION MANAGEMENT).
Please help me is it possible to build such a website using DRUPAL or any other CMS.Is CMS good in storing PRODUCT MARKETING INFORMATION.

Thanks in advance.

Regards,
SASI.

I recently migrated a large vBulletin site to Drupal 7 using a combination of the vBulletin to Drupal module and the Migrate module. I realized afterwards that the techniques installed user information into the old soon to be completely deprecated core User Profile instead of User Entity Fields.

Can someone please clarify whether the Drupal 8 upgrade will provide some kind of migration for User Profiles? I do not want to get stuck in Drupal 7 because of this issue.

Our site has 100 000+ nodes and one node has approxx 150+ fields (Field collection). Nodes also have relations.
Nodes were created via Feeds module using multiple XML files (each file 100M+) without any problems. It took about 1,5 hour/file.

PROBLEM: Updating the content of existing nodes using the same XML via Feeds is awfully slow. 100Mb XML file ran 1 week and was only 20% complete.
We are using Feeds with the replace option. We also tried the update option but that has other issues (data was not updated correctly).