[php-src] Issue #21599: Windows' PHP 8.5 still doesn't handle br-encoded response correctly

[email protected] (yoozor) Thu, 2 Apr 2026 05:20:54 +0000

Newsgroups	php.bugs
Message-ID	<[email protected]>

Issue: https://github.com/php/php-src/issues/21599
Author: yoozor

### Description

## This DOES NOT happen on Linux (linux+php) but on Windows for many years. When are you going to support brotli-encoded response on Windows??

The following code:

```php
<?php
$url = 'https://ftp.mozilla.org/';

$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_VERBOSE => true,
    CURLOPT_TIMEOUT => 15,
    CURLOPT_HTTPHEADER => [
        'User-Agent: Mozilla/5.0 (Android; K) Chrome/144.0',
    ],
    CURLOPT_ENCODING => 'gzip, deflate, br',
]);

$response = curl_exec($ch);

if ($response === false) {
    echo "cURL error: " . curl_error($ch);
} else {
    echo $response;
}

```

Resulted in this output:
```
....
* Request completely sent off
< HTTP/2 200 
....
< content-encoding: br
....
bool(false)
```

But I expected this output instead:
```
....
* Request completely sent off
< HTTP/2 200 
....
< content-encoding: br
....
<!DOCTYPE html>
<html>
....
```


### PHP Version

```plain
PHP 8.5.4 (cli)
```

### Operating System

Windows