mb_convert

Description

string mb_convert_case ( string str, int mode [, string encoding] )

mb_convert_case() returns case folded version of string converted in the way specified by mode.

mode can be one of MB_CASE_UPPER, MB_CASE_LOWER or MB_CASE_TITLE.

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

The return value is str with the appropriate case folding applied.

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/.

例子 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; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO $str = mb_convert_case($str, MB_CASE_TITLE, "UTF-8"); echo $str; // Prints Mary Had A Little Lamb And She Loved It So ?>

add a note User Contributed Notes

alex at agileware dot net
07-Feb-2006 10:02


This function is a bit more flexible than using mb_convert_case with MB_CASE_TITLE, because it lets you add words whose case you don't want modified.



function title_case($string, $exceptions = array('to', 'a', 'the', 'of', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X')) {

    $words = split(" ", $string);

    $newwords = array();



    foreach ($words as $word)

    {

        if (!array_key_exists($word, $exceptions)) {

            $word = strtolower($word);

            $word = ucfirst($word);

        }

        array_push($newwords, $word);



    }



    return ucfirst(join(" ", $newwords));

}

footballkid4 at hotmail dot com
05-Feb-2006 12:59


This function will capitalize the first letter ( the same as using mb_convert_case with MB_CASE_TITLE flag, but when using a sentence, it'll only capitalize the first word )



<?php

function capitalize(&$input) {

     $input = strtoupper( substr( $input , 0 , 1 ) ).strtolower( substr( $input , 1 ) );

     return $input;

}

?>



Very short, uses substr, strtoupper, and strtoupper only

Rasa Ravi at tantrajoga dot cz
30-Apr-2005 04:36


For CZECH characters:

<?php

$text = mb_convert_case($text, MB_CASE_LOWER, "Windows-1251");

?>

The right encoding Windows-1250 is not valid (see the list mb_list_encodings), but Windows-1251 will do the same 100%. The function strtolower() ignores czech characters with diacritics.

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