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A major update to the PHP language

New URI extension, modify properties while cloning, the Pipe operator, and more.

Upgrade now

What's new in PHP 8.5

Add RFC 3986 and WHATWG URL compliant API

PHP < 8.5

$components = parse_url("https://php.net/releases/8.5/en.php");

var_dump($components['host']);
// string(7) "php.net"

PHP 8.5 New

use Uri\Rfc3986\Uri;

$uri = new Uri("https://php.net/releases/8.5/en.php");

var_dump($uri->getHost());
// string(7) "php.net"

As an always-available part of PHP's standard library the new URI extension provides APIs to parse and modify URIs and URLs according to the RFC 3986 and the WHATWG URL standards.

The secure and standards-compliant URI parsing is powered by the uriparser (RFC 3986) and Lexbor (WHATWG URL) libraries.

Clone with V2

RFC

PHP < 8.5

final readonly class PhpVersion
{
    public function __construct(
        public string $version = 'PHP 8.4',
    ) {}

    public function withVersion(string $version): self
    {
        $newObject = clone $this;
        $newObject->version = $version;
        
        return $newObject;
    }
}

$version = new PhpVersion();
var_dump($version->version);
// string(7) "PHP 8.4"

var_dump($version->withVersion('PHP 8.5')->version);
// Fatal error: Uncaught Error: Cannot modify readonly property PhpVersion::$version

PHP 8.5 New

final readonly class PhpVersion
{
    public function __construct(
        public string $version = 'PHP 8.4',
    ) {}

    public function withVersion(string $version): self
    {
        return clone($this, ['version' => $version]);
    }
}

$version = new PhpVersion();
var_dump($version->version);
// string(7) "PHP 8.4"

var_dump($version->withVersion('PHP 8.5')->version);
// string(7) "PHP 8.5"

var_dump($version->version);
// string(7) "PHP 8.4"

It is now possible to update properties during object cloning by passing an associative array with the updated properties to the clone() function. This enables straight-forward support of the "with-er" pattern for readonly classes.

Pipe Operator

RFC

PHP < 8.5

$input = 'Some kind of string.';

$output = strtolower(
    str_replace(['.', '/', '…'], '',
        str_replace(' ', '-',
            trim($input)
        )
    )
);

var_dump($output);
// string(19) "some-kind-of-string"

PHP 8.5 New

$input = ' Some kind of string. ';

$output = $input
    |> trim(...)
    |> (fn($string) => str_replace(' ', '-', $string))
    |> (fn($string) => str_replace(['.', '/', '…'], '', $string))
    |> strtolower(...);

var_dump($output);
// string(19) "some-kind-of-string"

New #[\NoDiscard] attribute

RFC

PHP < 8.5

function getPhpVersion(): string
{
    return 'PHP 8.4';
}

getPhpVersion();
// No Errors

PHP 8.5 New

#[\NoDiscard]
function getPhpVersion(): string
{
    return 'PHP 8.5';
}

getPhpVersion();

// Warning: The return value of function getPhpVersion() should either be used or intentionally ignored by casting it as (void)

By adding the #[\NoDiscard] attribute to a function, PHP will check whether the returned value is consumed and emit a warning if it is not. This allows to improve the safety of APIs where the returned value is important, but where it is easy to forget using the return value by accident.

The associated (void) cast can be used to indicate that a value is intentionally unused.

Closures and First Class Callables in constant expressions

RFC RFC

PHP < 8.5

final class CalculatorTest extends \PHPUnit\Framework\TestCase
{
    #[\DataProvider('subtractionProvider')]
    public function testSubtraction(
        int $minuend,
        int $subtrahend,
        int $result
    ): void
    {
        $this->assertSame(
            $result,
            Calculator::subtract($minuend, $subtrahend)
        );
    }

    public static function subtractionProvider(): iterable
    {
        for ($i = -10; $i <= 10; $i++) {
            yield [$i, $i, 0, $i];
            yield [$i, 0, $i];
            yield [0, $i, -$i];
        }
    }
}

PHP 8.5 New

final class CalculatorTest
{
    #[\Test\CaseGenerator(static function(): iterable {
        for ($i = -10; $i <= 10; $i++) {
            yield [$i, $i, 0, $i];
            yield [$i, 0, $i];
            yield [0, $i, -$i];
        }
    })]
    public function testSubtraction(
        int $minuend,
        int $subtrahend,
        int $result
    )
    {
        \assert(
            Calculator::subtract($minuend, $subtrahend) === $result
        );
    }
}

Persistent cURL share handle improvement

RFC RFC

PHP < 8.5

$sh = curl_share_init();
curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);

$ch1 = curl_init('https://php.net/');
curl_setopt($ch1, CURLOPT_SHARE, $sh);
curl_exec($ch1);

$ch2 = curl_init('https://thephp.foundation/');
curl_setopt($ch2, CURLOPT_SHARE, $sh);
curl_exec($ch2);

PHP 8.5 New

$sh = curl_share_init_persistent([
    CURL_LOCK_DATA_DNS,
    CURL_LOCK_DATA_CONNECT
]);

$ch1 = curl_init('https://php.net/');
curl_setopt($ch1, CURLOPT_SHARE, $sh);
curl_exec($ch1);

$ch2 = curl_init('https://thephp.foundation/');
curl_setopt($ch2, CURLOPT_SHARE, $sh);
curl_exec($ch2);

New classes available: CurlSharePersistentHandle class, curl_multi_get_handles() and curl_share_init_persistent() functions are available.

New array_first() and array_last() functions

RFC

PHP < 8.5

$php = [
    'php-82' => ['state' => 'security', 'branch' => 'PHP-8.2'],
    'php-83' => ['state' => 'active', 'branch' => 'PHP-8.3'],
    'php-84' => ['state' => 'active', 'branch' => 'PHP-8.4'],
    'php-85' => ['state' => 'upcoming', 'branch' => 'PHP-8.5'],
];

$upcomingRelease = null;
foreach ($php as $key => $version) {
    if ($version['state'] === 'upcoming') {
        $upcomingRelease = $version;
        break;
    }
}

var_dump($upcomingRelease);

PHP 8.5 New

$php = [
    'php-82' => ['state' => 'security', 'branch' => 'PHP-8.2'],
    'php-83' => ['state' => 'active', 'branch' => 'PHP-8.3'],
    'php-84' => ['state' => 'active', 'branch' => 'PHP-8.4'],
    'php-85' => ['state' => 'upcoming', 'branch' => 'PHP-8.5'],
];

$upcomingRelease = array_first(
    array_filter(
        $php,
        static fn($version) => $version['state'] === 'upcoming'
    )
);

var_dump($upcomingRelease);

New Classes, Interfaces, and Functions

Property Promotion is now available for final
Attributes are now available for constants
Attribute #[\Override] now works on properties
Attribute #[\Deprecated] available for traits
Asymmetric Visibility for Static Properties
New #[\DelayedTargetValidation] attribute is available
New get_error_handler(), get_exception_handler() functions are available
New Closure::getCurrent method is available
New Dom\Element::getElementsByClassName() and Dom\Element::insertAdjacentHTML() methods are available
New enchant_dict_remove_from_session() and enchant_dict_remove() functions are available
New grapheme_levenshtein() function is available
New opcache_is_script_cached_in_file_cache() function is available
New ReflectionConstant::getFileName(), ReflectionConstant::getExtension(), ReflectionConstant::getExtensionName(), ReflectionConstant::getAttributes(), and ReflectionProperty::getMangledName() methods are available

Deprecated Classes, Interfaces, and Functions

No deprecations or breaking changes.

Better performance, better syntax, improved type safety.

Upgrade to PHP 8.5 now

For source downloads of PHP 8.5 please visit the downloads page. Windows binaries can be found on the PHP for Windows site. The list of changes is recorded in the ChangeLog.

The migration guide is available in the PHP Manual. Please consult it for a detailed list of new features and backward-incompatible changes.