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(PHP 4 >= 4.3.0, PHP 5)

mb_strtolower -- Make a string lowercase

Description

string mb_strtolower ( string str [, string encoding] )

mb_strtolower() returns str with all alphabetic characters converted to lowercase.

encoding specifies the encoding of str ; if omitted, the internal character encoding value will be used.

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).

Example 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
?>

Related Function(s)

strtolower()

mb_strtoupper()

mb_convert_case()