bad work in closure with null argument

[m-derakhshi]

when i use code

print_r( '<?php return '.\Brick\VarExporter\VarExporter::export($array,0,0).';'.PHP_EOL);

and $array is :

$array = [ 'id' => [
    'type' => 'searchableEnums',
    'label' => '__::articleCategory/articleCategory.module.name.plural',
    'options' => fn (string|array|null $values) => App(ArticleCategoryService::class)->searchableArticleCategoryEnum($values),
]];

response is : [ function (string|array|\Projects\Controllers\null $values) ]

<?php return [
    'id' => [
        'type' => 'searchableEnums',
        'label' => '__::articleCategory/articleCategory.module.name.plural',
        'options' => function (string|array|\Projects\Controllers\null $values){
            return App(\ArticleCategory\ArticleCategoryService::class)->searchableArticleCategoryEnum($values);
        }
    ]
];

[BenMorel]

Indeed, this is a bug, thanks for reporting it!

Full reproduce:

namespace Project\Controllers;
use Brick\VarExporter\VarExporter;

require 'vendor/autoload.php';

$function = function (string|array|null $values): string|null {
    return null;
};

$fn = fn (string|array|null $values): string|null => null;

echo VarExporter::export($function), "\n";
echo VarExporter::export($fn), "\n";

Expected output:

function (string|array|null $values): string|null {
    return null;
}
function (string|array|null $values): string|null {
    return null;
}

Actual output:

function (string|array|\Project\Controllers\null $values): string|\Project\Controllers\null {
    return null;
}
function (string|array|\Project\Controllers\null $values): string|\Project\Controllers\null {
    return null;
}

Maybe @jasny could help?

[jasny]

This seems to be a bug in https://github.com/nikic/PHP-Parser. We need to open an issue there.

[BenMorel]

Thanks for taking a look, @jasny! Do you want to take care of it?