PHP Versions Upgradation - What's New vs Old Version

PHP Versions Upgradation What's New vs Old Version PHP's frequent upgrades to patch issues and provide new features are its biggest advantages. PHP 8.2 is coming. It may convince everyone to switch to PHP 8. Let's discuss PHP 8.2's benefits for developers. First, let's review PHP's history.

8.0 Released in November 2020, PHP 8.0 brought us the best features yet, which includes:

Attributes

Constructor property promotion

class PostsController { #[Route("/api/posts/{id}", methods: ["GET"])] public function get($id) { /* ... */ } }

class Point { public function public float $x public float $y public float $z ) {} }

__construct( = 0.0, = 0.0, = 0.0,

Named arguments

Union types

Match expression

Nullsafe operator

htmlspecialchars ($string,double_encode: false);

class Number { public function __construct( private int|float $number ) {} }

echo match (8.0) { '8.0' => "Oh no!", 8.0 => "This is what I expected", }; //> This is what I expected

$country = $session?>user?->getAddress()?>country;

new Number('NaN'); // TypeError

8.1 Released in November 2021, PHP 8.1 brought us the best features yet, which includes:

Enumerations

Readonly Properties

enum Status { case Draft; case Published; case Archived; } function acceptStatus(Status $status) {...}

class BlogData { public readonly Status $status; public function __construct (Status$status) { $this->status = $status; } }

First-class Callable Syntax

New in initializers

Pure Intersection Types

Fibers

$foo = $this->foo(...);

class Service { private Logger $logger; public function __construct( Logger $logger = new NullLogger(), ) { $this->logger = $logger; } }

function count_and_iterate(Iterator &Countable $value) { foreach ($value as $val) { echo $val; } count($value); }

$response = $httpClient>request('https://example. com/'); print json_decode($response>getBody()->buffer()) ['code'];

$fn = strlen(...);

8.2 Released in December 2022, PHP 8.2 brought us the best features yet, which includes:

Constants in Traits trait Foo { public const CONSTANT = 1; } class Bar { use Foo; } var_dump(Bar::CONSTANT); // 1 var_dump(Foo::CONSTANT); // Error

True, False, and Null as Standalone Types function alwaysFalse(): false { return false; }

Redacting The Support For Sensitive Parameter Values function passwords( $publicpassword, #[\SensitiveParameter] $secretpassword ) { throw new \Exception('Error'); } passwords('publicpassword', 'secretpassword');

Disjunctive Normal Form Types // Accepts an object that implements both A and B, // OR an object that implements D. (A&B)|D // Accepts an object that implements C, // OR a child of X that also implements D, // OR null.

C|(X&D)|null // Accepts an object that implements all three of A, B, and D, // OR an int, // OR null.

(A&B&D)|int|null

Readonly Classes readonly class MyClass { public string $myValue, public int $myOtherValue public string $myAnotherValue public int $myYetAnotherValue }

How To Upgrade PHP Version

01

Check Your Current Version

05

Switch your PHP Version

02

Contact Web Host Provider

06

Check For Errors

03

Create a Site Backup

07

Updates Themes and Plugins

04

Update WordPress

08

Go Live With the Update

PHP is improving in syntax simplification and support for new features with each new version.

For More Detailed Features of PHP 8.2 You can read the Full blog on Whats New In PHP 8.2