PHP - Grabbing info from the database (complicated) [closed] - php

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I need a little help. I need to grab all rows which contain their logged in ID from a database. Basically, I have a column in the database called "owners" and in it it has a few IDs. Lets say "1, 6, 8", If user ID 6 is logged in, I need to grab that row. If it doesn't contain 6, say "2, 5, 7" then don't grab it. My wording probably isn't good.
--------------------------------
ID |Name |Other Info |Owners|
---|--------|-----------|------|
1 |Testing |Testing 123|1,4,6 |
---|--------|-----------|------|
2 |Testing1|Catz |5,7,8 |
---|--------|=-----------------|
3 |Testing2|Woof |6,9,10|
---|--------|-----------|------|
In other words:
User ID 6 logs in.
Goes to page which needs the rows to be grabbed.
Script grabs rows 1 and 3 (because the owners list contains 6).
PHP foreach, showing the resutls in a table. (Don't need help with
this).
The reason I want this is I don't want ownerid2, ownerid3, ownerid4 taking up loads of space in separate columns in the database.

Answer 1

You could try this:
SELECT * FROM table_name WHERE FIND_IN_SET(?, Owners);
where ? has to be replaced with the user id, for example
SELECT * FROM table_name WHERE FIND_IN_SET(6, Owners);
as other pointed out, you might also want to read about database normalization, and here is the docs for FIND_IN_SET

Answer 2

A cleaner way to accomplish this is to use a separate table for the owner relationship.
Table = Owner, has ID.
Table = Test, what you are currently trying to get
Table = OwnerTestRel, has a foreign key to Owner and one to Test.
Then your query can become something like
Select test.*
FROM test
JOIN OwnerTestRel ON test.id=OwnerTestRel.testId
WHERE OwnerTestRel.ownerId = {owner's Id}

Answer 3

could this possibly be what you're after?
SELECT * FROM table_name WHERE Owners LIKE '%6%';
????
EDIT: doing it this way would pull up other owners like 68, 600, 6123. you should look into database normalization.
EDIT2:
just thought of this, since there's no spaces between your commas you could use the explode(); function like so:
$ownerid = //WHATEVER THE OWNERS ID IS
$sql = "SELECT * FROM table_name WHERE Owners LIKE '%$ownerid%'";
$result = mysqli_query($con, $sql);
while($data = mysqli_fetch_array($result)){
$owners = $data['Owners'];
$owners = explode(',',$data);
if(in_array($ownerid, $owners){
//SHOW ROW DATA HERE
}
}