IntlChar::toupper
Make Unicode character uppercase
Description
public static intstringnull IntlChar::toupper(intstring $codepoint)
Parameters
-
codepoint
-
The int codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Return Values
Returns the Simple_Uppercase_Mapping of the code point, if any;
otherwise the code point itself.
The return type is int unless the code point was passed as a UTF-8 string, in which case a string is returned. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::toupper("A"));
var_dump(IntlChar::toupper("a"));
var_dump(IntlChar::toupper("Φ"));
var_dump(IntlChar::toupper("φ"));
var_dump(IntlChar::toupper("1"));
var_dump(IntlChar::toupper(ord("A")));
var_dump(IntlChar::toupper(ord("a")));
?>
The above example will output:
string(1) "A"
string(1) "A"
string(2) "Φ"
string(2) "Φ"
string(1) "1"
int(65)
int(65)
See Also
- IntlChar::tolower
- IntlChar::totitle
- mb_strtoupper