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PHP · Theory

OOP

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Theory

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OOP

OOP sits in a first job task. Riya’s job is OOP on Riya's board. Write that first.

For OOP, a .php page is in play. Don’t blame it until you have traced OOP on Riya's board.

Without OOP, a first job task gets messy and OOP on Riya's board is hard to trust.

Use OOP when OOP on Riya's board must stay clear. If a simpler PHP step works, use that instead.

If OOP on Riya's board breaks under OOP, check only reciting the name of OOP first.

OOP is not a lonely heading. Riya ties it to OOP on Riya's board.

Close OOP with — “If I skip it, OOP on Riya's board goes wrong like this: only reciting the name of OOP.”

Exam tip

Say OOP in one breath, then one OOP step Riya can write from memory, then only reciting the name of OOP.

Example

<?php
class User {
  public function __construct(private string $name) {}
  public function hello(): string {
    return "Hello, {$this->name}";
  }
}
echo (new User("Ravi"))->hello();

OOP — constructor property promotion keeps simple classes short.

Short notes

  • DefOOP — Riya uses it for OOP on Riya's board in a first job task.
  • RuleOOP → one OOP step Riya can write from memory.
  • RememberOOP + a .php page (a first job task).
  • UseOOP in a first job task (OOP on Riya's board).
  • TrapOOP — only reciting the name of OOP.
  • ExOOP → OOP on Riya's board.

Questions

1

Define OOP without jargon. Then point at OOP on Riya's board.

2

When would Riya actually reach for OOP?

3

What trap does Riya hit with OOP?

4

Change one input on OOP on Riya's board. Predict the new result.

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