28 May
Posted By
PHP 8 New Features
- JIT Compiler (Just-In-Time Compiler): The JIT compiler translates PHP code into machine code, enhancing execution speed, particularly in computation-intensive applications.
-
Union Types:
Allows functions and methods to define parameters or return values with multiple types, e.g.,
function foo(int|float $value) {}
, increasing code flexibility and readability. - Named Arguments: Enables passing arguments to functions using parameter names, making the code clearer, especially when dealing with functions that have many parameters with default values.
-
Attributes (Annotations):
Introduces a new native syntax for adding metadata, which can replace traditional PHPDoc comments, e.g.,
#[MyAttribute]
. -
Constructor Property Promotion:
Simplifies class constructors by allowing property declaration and initialization directly in the constructor parameters, e.g.,
public function __construct(private string $name, private int $age) {}
. -
Match Expression:
Provides a more concise way to replace switch statements, supporting return values and not requiring break statements, e.g.,
$result = match($input) { 1 => 'one', 2 => 'two', default => 'unknown', };
-
Nullsafe Operator:
Uses the
?->
operator to handle null objects safely, e.g.,$country = $session?->user?->getAddress()?->country;
. -
Enhanced Type System and Error Handling:
Includes the new
throw
expression, allowingthrow
in conditions, consistent error handling mechanisms, and an improved type system, making the code more robust and secure.