SPL Debug: [0] for: 0 -> This is
SPL Debug: [0] for: 1 -> a test!
SPL Debug: [0] for: 4 -> Yo!
SPL Debug: [0] foreach: 0 -> This is
SPL Debug: [0] foreach: 1 -> a test!
SPL Debug: [0] foreach: 4 -> Yo!
SPL Debug: [0] foreach[]: This is
SPL Debug: [0] foreach[]: a test!
SPL Debug: [0] foreach[]: Yo!
SPL Debug: [0] while: This is
SPL Debug: [0] while: a test!
SPL Debug: [0] while: Yo!
SPL Debug: [0] do-while: This is
SPL Debug: [0] do-while: a test!
SPL Debug: [0] do-while: Yo!
SPL Debug: [1] for: 0 -> This is
SPL Debug: [1] for: 1 -> a test!
SPL Debug: [1] for: 4 -> Yo!
SPL Debug: [1] foreach: 0 -> This is
SPL Debug: [1] foreach: 1 -> a test!
SPL Debug: [1] foreach: 4 -> Yo!
SPL Debug: [1] foreach[]: This is
SPL Debug: [1] foreach[]: a test!
SPL Debug: [1] foreach[]: Yo!
SPL Debug: [1] while: This is
SPL Debug: [1] while: a test!
SPL Debug: [1] while: Yo!
SPL Debug: [1] do-while: This is
SPL Debug: [1] do-while: a test!
SPL Debug: [1] do-while: Yo!
SPL Debug: [2] for: 0 -> This is
SPL Debug: [2] for: 1 -> a test!
SPL Debug: [2] for: 4 -> Yo!
SPL Debug: [2] foreach: 0 -> This is
SPL Debug: [2] foreach: 1 -> a test!
SPL Debug: [2] foreach: 4 -> Yo!
SPL Debug: [2] foreach[]: This is
SPL Debug: [2] foreach[]: a test!
SPL Debug: [2] foreach[]: Yo!
SPL Debug: [2] while: This is
SPL Debug: [2] while: a test!
SPL Debug: [2] while: Yo!
SPL Debug: [2] do-while: This is
SPL Debug: [2] do-while: a test!
SPL Debug: [2] do-while: Yo!