Symfony version(s) affected

5.4.30

Description

Method \Symfony\Component\String\AbstractString::toByteString throws ValueError exception when unsupported encoding for mb_convert_encoding is passed instead of using fallback iconv.

How to reproduce

u('žsžsý')->toByteString('windows-1250');

Throws ValueError with message mb_convert_encoding(): Argument #2 ($to_encoding) must be a valid encoding, "windows-1250" given.

Instead of returning ByteString with output of iconv

Possible Solution

No response

Additional Context

iconv('UTF-8', 'windows-1250', 'žsžsý') returns expected value.

Using PHP 8.1

It is possible that nobody noticed that PHP 8.0 added ValueError exception https://www.php.net/manual/en/function.mb-convert-encoding so the code is not compatible with php >= 8.0