Error when using PHP 8 named parameters

[Chi-teck]

Code example

function hello(string $name): void {
    echo "Hello $name!";
}

$example = function () {
    hello(name: 'Foo');
};

$wrapper = new SerializableClosure($example);
$result = unserialize(serialize($wrapper));

Result

PHP Parse error:  syntax error, unexpected token ":", expecting ")" in closure://function (): void {
    \hello(\name: 'Foo');
} on line 3

[GrahamCampbell]

Opis 3.6.1 does not support all new PHP 8 syntax. It supports all PHP 7.4 syntax on PHP 8.0, but not all new 8.0 syntax on 8.0 (it does support union types, but not named parameters).

[GrahamCampbell]

This repo is open to PRs if you'd like to implement it.