PHP Version
- 每个版本支持 2 年,+1 年安全修复
- 参考
Version | date | active/eol |
---|---|---|
PHP 8.4 | 2024-11-21 | 2026-12-31 |
PHP 8.3 | 2023-11-23 | 2025-12-31 |
PHP 8.2 | 2022-12-08 | 2024-12-31 |
PHP 8.1 | 2021-11-25 | 2023-11-25 |
PHP 8.0 | 2020-11-26 | |
PHP 7.4 | 2019-11-28 | 2022-11-28 |
PHP 8.4
- JIT
- new JIT implementation based on IR https://php.watch/rfcs/jit-ir
PHP 8.3
- lint -
php -l
json_validate
gc_status
class_alias
<?php
class Test {
// Typed Class Constants
const string TEST_CONSTANT = 'test';
}
$constName = 'TEST_CONSTANT';
// Dynamic class constant and Enum member fetch support
echo MyClass::{$constName};
PHP 8.2
- readonly 类
<?php
readonly class BlogData
{
public string $title;
public Status $status;
public function __construct(string $title, Status $status)
{
$this->title = $title;
$this->status = $status;
}
}
- Disjunctive Normal Form (DNF) 类型
<?php
class Foo {
public function bar((A&B)|null $entity) {
return $entity;
}
}
- null, false, true 作为独立类型
- trait 支持包含 const
- 参考
PHP 8.1
- fiber
- amphp
- enum
<?php
enum Status
{
case Draft;
case Published;
case Archived;
}
- readonly 属性
<?php
class BlogData
{
public readonly Status $status;
public function __construct(Status $status)
{
$this->status = $status;
}
}
- first class callable
<?php
// 类似于 获取函数引用
$foo = $this->foo(...);
$fn = strlen(...);
- Intersection Types
<?php
function count_and_iterate(Iterator&Countable $value) {
foreach ($value as $val) {
echo $val;
}
count($value);
}
never
类型 - 不返回- array spread
<?php
$arrayA = ['a' => 1];
$arrayB = ['b' => 2];
// array_merge
$result = ['a' => 0, ...$arrayA, ...$arrayB];
PHP 8.0
- JIT
- 语法
match
static
,mixed
- nullsafe
$user->getBirthday()?->diffForHumans()
- stdlib
- WeakMap
- DateTime
- Stringable
- 命名参数
- Attributes
- Union 类型
int|float
- Nullsafe operator -
?->
0 == 'foobar'
true
->false
<?php
// 类似 python 语法
htmlspecialchars($string, double_encode: false);
// 类似 java annotation、js decorator
class PostsController
{
#[Route("/api/posts/{id}", methods: ["GET"])]
public function get($id) { /* ... */ }
}
// 构造函数属性
class Point {
public function __construct(
public float $x = 0.0,
public float $y = 0.0,
public float $z = 0.0,
) {}
}
// Match 表达式
// 类似 go 的 select
echo match (8.0) {
'8.0' => "Oh no!",
8.0 => "This is what I expected",
};
PHP 7.4
- 属性类型 -
public int $id
- 限定返回类型
??=
- array spread
- 箭头函数 -
fn($x) => $x * $x
- 数字
_
分割 - FFI
- WeakReference
- 参考
PHP 7.3
- Array Destructuring
- 支持引用
PHP 7.2
- Object typehint
PHP 7.1
- Nullable
void
返回类型- Iterable 类型
- list
[]
, 支持 key
PHP 7.0
- Zend Engine
- Anonymous Classes
??
- null coalescing operator