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(PHP 4 >= 4.3.0, PHP 5)

mb_strtoupper -- Make a string uppercase

Description

string mb_strtoupper ( string str [, string encoding] )

mb_strtoupper() returns str with all alphabetic characters converted to uppercase.

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

By contrast to strtoupper() , '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).

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

Example 1. mb_strtoupper() example

<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = mb_strtoupper($str);
echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>

Related Function(s)

strtoupper()

mb_strtolower()

mb_convert_case()