Multibyte String 函数
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mb_convert_case

(PHP 4 >= 4.3.0, PHP 5)

mb_convert_casePerform case folding on a string

说明

string mb_convert_case ( string $str , int $mode=MB_CASE_UPPER [, string $encoding=mb_internal_encoding() ] )

Performs case folding on a string, converted in the way specified by mode .

参数

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.

返回值

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 (?).

For more information about the Unicode properties, please see » http://www.unicode.org/unicode/reports/tr21/.

范例

Example #1 mb_convert_case() example

<?php
$str 
"mary had a Little lamb and she loved it so";
$str mb_convert_case($strMB_CASE_UPPER"UTF-8");
echo 
$str// Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
$str mb_convert_case($strMB_CASE_TITLE"UTF-8");
echo 
$str// Prints Mary Had A Little Lamb And She Loved It So
?>

参见


Multibyte String 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程