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PHP Functions

Function: 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.

Note: 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());
?>

Related Function(s)

  • mb_detect_encoding()
  • mb_send_mail()
  • mb_internal_encoding()
  • mb_http_input()
  • mb_http_output()
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