Bug #71183 [Opn->Nab]: mb_detect_encoding wrong with Windows-1252

Edit report at https://bugs.php.net/bug.php?id=71183&edit=1 ID: 71183 Updated by: ab@php.net Reported by: martin at sutunam dot com Summary: mb_detect_encoding wrong with Windows-1252 -Status: Open +Status: Not a bug Type: Bug Package: mbstring related Operating System: Ubuntu PHP Version: 5.5.30 Block user comment: N Private report: N New Comment: Thanks for the report. Firstly, with 0x80 you append a number, not a char. Use chr(0x80). Secondly, a longer string could have more success. It is in general hard to determine some single byte encoding, and it's almost impossible with passing just 5 byte which all are numbers and white space. It can even fail sometime for multibyte encoding. It is unlikely related to a buggy behavior in any way. Thanks. Previous Comments: ------------------------------------------------------------------------ [2015-12-21 18:28:32] martin at sutunam dot com Description: ------------ mb_detect_encoding doesn't detect string with Windows-1252 ( cp1252 ) encoding. The function is supposed to return the first compatible encoding within the provided encoding list as second param. Even with an ASCII string like 'aaa', it refuse the Windows-1252 encoding. Test script: --------------- <?php $enc = 'Windows-1252'; if (!in_array($enc, mb_list_encodings())) { die($enc.' not supported'); } $val = '100 '. 0x80; // € sign in cp1252 echo mb_detect_encoding($val, $enc.',ISO-8859-1', true).PHP_EOL; $val = 'aaa'; echo mb_detect_encoding($val, $enc.',ISO-8859-1', true).PHP_EOL; Expected result: ---------------- Windows-1252 Windows-1252 Actual result: -------------- ISO-8859-1 ISO-8859-1 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71183&edit=1