Notas de Estudo: PHP 8

php-notas.md

Novidades do PHP 8

• Union Types (|)
  • public function foo(Foo|Bar $input): int|float;
• JIT
  • TODO: comparar performance PHP 7 x PHP 8 com processamento de imagens
• The nullsafe operator (?)
  • $dateAsString = $booking->getStartDate()?->asDateTimeString();
• Named arguments
  • function foo(string $a, string $b, ?string $c = null, ?string $d = null)
• Attributes (@@)
  • estudar mais
• Match expression
• Constructor property promotion
• New static return type
• New mixed type
• Throw expression
• Inheritance with private methods
• Weak maps
• Allowing ::class on objects
• Non-capturing catches
• Trailing comma in parameter lists
• Create DateTime objects from interface
• New Stringable interface
• New str_contains() function
• New str_starts_with() and str_ends_with() functions
• New fdiv() function
• New get_debug_type() function
• New get_resource_id() function
• Abstract methods in traits improvements
• Object implementation of token_get_all()
• Variable syntax tweaks
• ext-json always available