--TEST-- mb_http_output() --SKIPIF-- --FILE-- getMessage() . \PHP_EOL; } $enc = mb_http_output(); print "$enc\n"; ?> --EXPECT-- OK_ASCII_SET ASCII OK_SJIS_SET SJIS OK_JIS_SET JIS OK_UTF-8_SET UTF-8 OK_EUC-JP_SET EUC-JP == INVALID PARAMETER == mb_http_output(): Argument #1 ($encoding) must be a valid encoding, "BAD_NAME" given EUC-JP