mb_strstr
mb_strtoupper
Multibyte String Функции
PHP Manual

# mb_strtolower

(PHP 4 >= 4.3.0, PHP 5)

mb_strtolower — Make a string lowercase

### Описание

string mb_strtolower ( string `$str` [, string `$encoding`= mb_internal_encoding() ] )

Returns `str` with all alphabetic characters converted to lowercase.

### Список параметров

`str`

  The string being lowercased.

`encoding`

  The `encoding` parameter is the character encoding. If it is omitted, the internal character encoding value will be used.

### Возвращаемые значения

`str` with all alphabetic characters converted to lowercase.

### Unicode

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

By contrast to strtolower(), 'alphabetic' is determined by 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).

### Примеры

Пример #1 mb_strtolower() example

`<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = mb_strtolower($str);
echo $str; // Prints mary had a little lamb and she loved it so
?>`

### Смотрите также

- mb_strtoupper() - Make a string uppercase
- mb_convert_case() - Perform case folding on a string
- strtolower() - Преобразует строку в нижний регистр

mb_strstr
mb_strtoupper
Multibyte String Функции
PHP Manual