mb_convert_case
(PHP 4 >= 4.3.0, PHP 5)
mb_convert_case — Perform case folding on a string
Description
string mb_convert_case
( string $str
, int $mode
[, string $encoding
] )
Parameters
-
str
-
The string being converted.
-
mode
-
The mode of the conversion. It can be one of
MB_CASE_UPPER,
MB_CASE_LOWER, or
MB_CASE_TITLE.
-
encoding
-
The encoding
parameter is the character encoding. If it is omitted, the internal character
encoding value will be used.
Return Values
A case folded version of string
converted in the
way specified by mode
.
Unicode
By contrast to the standard case folding functions such as
strtolower() and strtoupper(),
case folding is performed on the basis of the Unicode character
properties. Thus the behaviour of this function is not affected
by locale settings and it can convert any characters that have
'alphabetic' property, such as A-umlaut (Ä).
For more information about the Unicode properties, please see » http://www.unicode.org/unicode/reports/tr21/.
Examples
Example #1 mb_convert_case() example
<?php
$str = "mary had a Little lamb and she loved it so";
$str = mb_convert_case($str, MB_CASE_UPPER, "UTF-8");
echo $str; $str = mb_convert_case($str, MB_CASE_TITLE, "UTF-8");
echo $str; ?>
mb_check_encoding
