Sets the automatic character encoding detection order to encoding.
encoding is an array or comma separated list of character encoding. See supported encodings.
If encoding is omitted or null, it returns the current character encoding detection order as array.
This setting affects mb_detect_encoding and mb_send_mail.
mbstring currently implements the following encoding detection filters. If there is an invalid byte sequence for the following encodings, encoding detection will fail.
UTF-8, UTF-7, ASCII, EUC-JP,SJIS, eucJP-win, SJIS-win, JIS, ISO-2022-JP
For ISO-8859-*, mbstring always detects as ISO-8859-*.
For UTF-16, UTF-32, UCS2 and UCS4, encoding detection will fail always.
When setting the encoding detection order, true is returned on success or false on failure.
When getting the encoding detection order, an ordered array of the encodings is returned.
|8.0.0||encoding is nullable now.|