php-doc-en/reference/mbstring/functions/mb-convert-case.xml
Philip Olson a19afca437 WS, preparation for the new doc style
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@242741 c90b9560-bf6c-de11-be94-00142212c4b1
2007-09-20 20:55:38 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<refentry xml:id="function.mb-convert-case" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>mb_convert_case</refname>
<refpurpose>Perform case folding on a string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>mb_convert_case</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
<methodparam><type>int</type><parameter>mode</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>encoding</parameter></methodparam>
</methodsynopsis>
<para>
<function>mb_convert_case</function> returns case folded version of
<parameter>string</parameter> converted in the way specified by
<parameter>mode</parameter>.
</para>
<para>
<parameter>mode</parameter> can be one of MB_CASE_UPPER, MB_CASE_LOWER
or MB_CASE_TITLE.
</para>
<para>
<parameter>encoding</parameter> specifies the encoding of
<parameter>str</parameter>; if omitted, the internal character encoding
value will be used.
</para>
<para>
The return value is str with the appropriate case folding applied.
</para>
<para>
By contrast to the standard case folding functions such as
<function>strtolower</function> and <function>strtoupper</function>,
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 (&Auml;).
</para>
<para>
For more information about the Unicode properties, please see <link
xlink:href="&url.unicode.reports;">&url.unicode.reports;</link>.
</para>
<para>
<example>
<title><function>mb_convert_case</function> example</title>
<programlisting role="php">
<![CDATA[
<?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
?>
]]>
</programlisting>
</example>
</para>
<para>
See also <function>mb_strtolower</function>,
<function>mb_strtoupper</function>,
<function>strtolower</function>,
<function>strtoupper</function>,
<function>ucfirst</function>&listendand;
<function>ucwords</function>
</para>
</refsect1>
</refentry>
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