PHP Arrays

I like Volvo, BMW and Toyota.
3
Volvo
BMW
Toyota

Peter is 35 years old.
Key=Peter, Value=35
Key=Ben, Value=37
Key=Joe, Value=43

Volvo: In stock: 22, sold: 18.
BMW: In stock: 15, sold: 13.
Saab: In stock: 5, sold: 2.
Land Rover: In stock: 17, sold: 15.

Row number 0

Volvo
22
18

Row number 1

Row number 2

Saab
5
2

Row number 3

Land Rover
17
15

BMW
Toyota
Volvo
Volvo
Toyota
BMW

2
4
6
11
22
22
11
6
4
2

Key=Peter, Value=35
Key=Ben, Value=37
Key=Joe, Value=43

Key=Ben, Value=37
Key=Joe, Value=43
Key=Peter, Value=35

Key=Joe, Value=43
Key=Ben, Value=37
Key=Peter, Value=35

Key=Peter, Value=35
Key=Joe, Value=43
Key=Ben, Value=37