# mb_detect_order

(PHP 4 >= 4.0.6, PHP 5)

mb_detect_order — Set/Get character encoding detection order

### Description

mixed mb_detect_order ([ mixed `$encoding_list` ] )

mb_detect_order() sets automatic character encoding detection order to `encoding_list` . It returns `TRUE` for success, `FALSE` for failure.

`encoding_list` is array or comma separated list of character encoding. ("auto" is expanded to "ASCII, JIS, UTF-8, EUC-JP, SJIS")

If `encoding_list` is omitted, it returns current character encoding detection order as array.

This setting affects mb_detect_encoding() and mb_send_mail().

> Note: mbstring currently implements following encoding detection filters. If there is an invalid byte sequence for following encoding, 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.

> Example#1 Useless detect order example

>     ; Always detect as ISO-8859-1
>     detect_order = ISO-8859-1, UTF-8

>     ; Always detect as UTF-8, since ASCII/UTF-7 values are
>     ; valid for UTF-8
>     detect_order = UTF-8, ASCII, UTF-7

Example#2 mb_detect_order() examples

`<?php
/* Set detection order by enumerated list */
mb_detect_order("eucjp-win,sjis-win,UTF-8");
/* Set detection order by array */
$ary[] = "ASCII";
$ary[] = "JIS";
$ary[] = "EUC-JP";
mb_detect_order($ary);
/* Display current detection order */
echo implode(", ", mb_detect_order());
?>`

See also mb_internal_encoding(), mb_http_input(), mb_http_output() and mb_send_mail().