Exception Handling in OOP

Exception Handling in OOP — a practical guide to PHP exceptions OOP with clear examples you can reuse in real projects.

OOP Tutorial Series (45/65). Prefer one article? Read the complete OOP tutorial.

Short description

Create domain exceptions, throw early, catch at boundaries, and avoid empty catch blocks.

Custom exception

class InsufficientFunds extends RuntimeException {}
class Wallet {
    public function __construct(private int $cents) {}
    public function pay(int $amount): void {
        if ($amount > $this->cents) throw new InsufficientFunds('Not enough funds');
        $this->cents -= $amount;
    }
}