Composite Design Pattern in PHP

• Interact with a group of objects, just like a single object.
• Tree structure to represent part-whole hierarchies.

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                            Menu
                          /      \
                         /        \
                        /          \
                  CellPhone       Laptop
                      / \          / \
                     /   \        /   \
                    /     \     L1     L2
                   /       \
             SmartPhone   DumpPhone 
                /   \
               /     \
              /       \
            S1         S2

Composite (it can have other objects below it)

• Menu
• Laptop
• CellPhone
• SmartPhone

Leaf (it has no objects below it)

• S1
• S2
• L1
• L2
• DumpPhone

YouTube link

https://youtu.be/3dmak5Do3xo