PHP MYSQLI搜索查询，使用数组作为参考

Question

I know my logic here is going to be atrocious so bear with me. In essence, when a user fills out a form consisting of 3 entry boxes(representing 3 different columns in the database), I want to execute a search that takes keywords from the filled boxes and looks for all other user profiles (constituting of a first name, experience, dreams and profile picture) within the database table containing at least X% of the keywords from the initial user's input boxes.

I've decided to represent the keywords in an array since that is what I am most familar with in terms of element organization. Using this array as a reference, the search will scan the users table for any users whose profile information contain X% of the keywords in the reference array.

The array has already been prepared, but now I need guidance as to whether or not the manner in which I want to finish the task is appropriate/valid.

EDIT 1: Forgive me if I am unclear, let me try a more disjointed way of portraying the task.

1. User fills out 3 unique textarea boxes.
2. User saves inputted data, in which that data is stored in database ( users table to be specific)
3. User goes to "Find Others" page
4. User clicks on "Find" button

5. Query takes user information of the 3 textareas, filters them individually, then compresses them into a single array of keywords.

   6. Another query will search the entire database and display the profiles of other users whose profiles contain X% of words that match the keywords in the array.
   7. User sees the profiles of other users with similar words within the information of their profiles.

The array that will contain the keywords:

$compressed_array = array_merge($filtered1, $filtered2, $filtered3);

Answer 1

You may want to try a slightly different approach.
When a user creates their entries, find the keywords and in a matching table store the relation of keywords to users.
This way, you can query the matching table, which should me much faster and easier to query.
Or you use a full-scale search platform, like Solr , which does more or less the same.

Any attempt to search your users table in real time will have huge performance problems as soon as you are handling a substantial amount of records.