mb_convert_casePerform case folding on a string
&reftitle.description;
stringmb_convert_casestringstringintmodestringnullencoding&null;
Performs case folding on a string, converted in the way specified by
mode.
&reftitle.parameters;
string
The string being converted.
mode
The mode of the conversion. It can be one of
MB_CASE_UPPER,
MB_CASE_LOWER,
MB_CASE_TITLE,
MB_CASE_FOLD,
MB_CASE_UPPER_SIMPLE,
MB_CASE_LOWER_SIMPLE,
MB_CASE_TITLE_SIMPLE,
MB_CASE_FOLD_SIMPLE.
encoding
&mbstring.encoding.parameter;
&reftitle.returnvalues;
A case folded version of string converted in the
way specified by mode.
&reftitle.changelog;
&Version;&Description;7.3.0
Added support for
MB_CASE_FOLD,
MB_CASE_UPPER_SIMPLE,
MB_CASE_LOWER_SIMPLE,
MB_CASE_TITLE_SIMPLE, and
MB_CASE_FOLD_SIMPLE
as mode.
&reftitle.examples;
<function>mb_convert_case</function> example
]]>
<function>mb_convert_case</function> example with non-Latin UTF-8 text
]]>
&reftitle.notes;
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 a-umlaut (ä).
For more information about the Unicode properties, please see &url.unicode.reports;.
&reftitle.seealso;
mb_strtolowermb_strtoupperstrtolowerstrtoupperucfirstucwords