PHP Versions Upgradation - What's New vs Old Version.pdf
0 likes13 views
The document discusses the advancements and features introduced in various PHP versions, specifically highlighting PHP 8.0, 8.1, and the upcoming 8.2. Key features include union types, match expressions, fibers, and readonly properties, with PHP 8.2 providing enhancements such as readonly classes and improved support for sensitive parameters. It also outlines steps for upgrading PHP versions to ensure developers can leverage the latest advancements.
![8.0
Released in November 2020,
PHP 8.0 brought us the best
features yet, which includes:
Union types Match expression Nullsafe operator
Attributes Constructor property promotion
Named arguments
htmlspecialchars
($string,double_encode:
false);
class Number {
public function
__construct(
private int|float
$number
) {}
}
new Number('NaN'); //
TypeError
echo match (8.0) {
'8.0' => "Oh no!",
8.0 => "This is what I
expected",
};
//> This is what I
expected
$country = $session?-
>user?->getAddress()?-
>country;
class PostsController
{
#[Route("/api/posts/{id}",
methods: ["GET"])]
public function get($id) { /* ...
*/ }
}
class Point {
public function __construct(
public float $x = 0.0,
public float $y = 0.0,
public float $z = 0.0,
) {}
}](https://image.slidesharecdn.com/phpversionsupgradation-whatsnewvsoldversion-221220070054-56360600/85/PHP-Versions-Upgradation-What-s-New-vs-Old-Version-pdf-2-320.jpg)
![8.1
Released in November 2021,
PHP 8.1 brought us the best
features yet, which includes:
New in initializers Pure Intersection Types Fibers
Enumerations Readonly Properties
First-class Callable Syntax
$foo = $this->foo(...);
$fn = strlen(...);
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'];
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;
}
}](https://image.slidesharecdn.com/phpversionsupgradation-whatsnewvsoldversion-221220070054-56360600/85/PHP-Versions-Upgradation-What-s-New-vs-Old-Version-pdf-3-320.jpg)
![8.2
Released in December 2022,
PHP 8.2 brought us the best
features yet, which includes:
Readonly Classes
Redacting The Support For
Sensitive Parameter Values
True, False, and Null as
Standalone Types
Disjunctive Normal Form Types
Constants in Traits
trait Foo
{
public const CONSTANT = 1;
}
class Bar
{
use Foo;
}
var_dump(Bar::CONSTANT); // 1
var_dump(Foo::CONSTANT); // Error
readonly class MyClass
{
public string $myValue,
public int $myOtherValue
public string $myAnotherValue
public int $myYetAnotherValue
}
function passwords(
$publicpassword,
#[SensitiveParameter]
$secretpassword
) {
throw new Exception('Error');
}
passwords('publicpassword',
'secretpassword');
function alwaysFalse(): false
{
return false;
}
// Accepts an object that implements both A and
B,
// OR an object that implements D.
(A&B)|D
// Accepts an object that implements C,
// OR a child of X that also implements D,
// OR null.
C|(X&D)|null
// Accepts an object that implements all three
of A, B, and D,
// OR an int,
// OR null.
(A&B&D)|int|null](https://image.slidesharecdn.com/phpversionsupgradation-whatsnewvsoldversion-221220070054-56360600/85/PHP-Versions-Upgradation-What-s-New-vs-Old-Version-pdf-4-320.jpg)
PHP Versions Upgradation - What's New vs Old Version.pdf
- 1. PHP Versions Upgradation - What's New vs Old Version PHP's frequent upgrades to patch issues and provide new features are its biggest advantages. PHP 8.2 is coming. It may convince everyone to switch to PHP 8. Let's discuss PHP 8.2's benefits for developers. First, let's review PHP's history.
- 2. 8.0 Released in November 2020, PHP 8.0 brought us the best features yet, which includes: Union types Match expression Nullsafe operator Attributes Constructor property promotion Named arguments htmlspecialchars ($string,double_encode: false); class Number { public function __construct( private int|float $number ) {} } new Number('NaN'); // TypeError echo match (8.0) { '8.0' => "Oh no!", 8.0 => "This is what I expected", }; //> This is what I expected $country = $session?- >user?->getAddress()?- >country; class PostsController { #[Route("/api/posts/{id}", methods: ["GET"])] public function get($id) { /* ... */ } } class Point { public function __construct( public float $x = 0.0, public float $y = 0.0, public float $z = 0.0, ) {} }
- 3. 8.1 Released in November 2021, PHP 8.1 brought us the best features yet, which includes: New in initializers Pure Intersection Types Fibers Enumerations Readonly Properties First-class Callable Syntax $foo = $this->foo(...); $fn = strlen(...); 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']; 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; } }
- 4. 8.2 Released in December 2022, PHP 8.2 brought us the best features yet, which includes: Readonly Classes Redacting The Support For Sensitive Parameter Values True, False, and Null as Standalone Types Disjunctive Normal Form Types Constants in Traits trait Foo { public const CONSTANT = 1; } class Bar { use Foo; } var_dump(Bar::CONSTANT); // 1 var_dump(Foo::CONSTANT); // Error readonly class MyClass { public string $myValue, public int $myOtherValue public string $myAnotherValue public int $myYetAnotherValue } function passwords( $publicpassword, #[SensitiveParameter] $secretpassword ) { throw new Exception('Error'); } passwords('publicpassword', 'secretpassword'); function alwaysFalse(): false { return false; } // 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
- 5. How To Upgrade PHP Version Check Your Current Version 01 Contact Web Host Provider 02 Create a Site Backup 03 Update WordPress 04 Switch your PHP Version 05 Check For Errors 06 Updates Themes and Plugins 07 Go Live With the Update 08
- 6. 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