What Adobe package do I need in order to create forms?

Adobe LiveCycle Designer (and its various names over the years) is being replaced by Adobe Experience Manager Forms Portal. See:

• AEM 6.0 Forms Help | Introduction to AEM forms
• AEM 6.0 Forms Help | AEM forms - securing and extending your existing forms ecosystem 
• Scale and automate onboarding and lead generation | Adobe Experience Manager Forms

Rather than traditional software that you purchase and install on your computer, this is a web service which for many can be more convenient and cost-effective.

You can also create new forms in Adobe InDesign (desktop publishing), add much of the form field processing there, export to PDF, and finalized the form in Acrobat Pro.

Of course there is. The only thing missing is access to doc-level scripts.

OK. ;-)

Thank you.

(either Standard or Pro).

There is no form editor in Standard version.

Hi.

There is no application called "Adobe DC". Adobe is a software company that makes a wide spectrum of different applications.

PDF forms creation requires Acrobat Pro (version DC or older): Adobe Document Cloud | Adobe Acrobat DC

For HTML/PHP forms I don't know…