how to know current user in my site

[Eng developer]

i have site connect to database system and users register in my site and i want know the current users inspecific catgory and total number of users

Eng.developer

[mbbisht]

just count the no of users from database

Mahendra

[Britney S Morales]

When the user goes throught the login page, you must to create a two session values with the user_ID and category, later create a consultation page, this page count all the user_id session values actives.

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