update : 2015.11.03
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Make Unicode character uppercase
IntlChar
PHP Manual

IntlChar::toupper

(PHP 7)

IntlChar::toupper — Make Unicode character uppercase

설명

public static mixed IntlChar::toupper ( mixed $codepoint )

The given character is mapped to its uppercase equivalent. If the character has no uppercase equivalent, the character itself is returned.

인수

codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

반환값

Returns the Simple_Uppercase_Mapping of the code point, if any; otherwise the code point itself.

The return type will be integer unless the code point was passed as a UTF-8 string, in which case a string will be returned.

예제

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")));
?>

위 예제의 출력:

string(1) "A"
string(1) "A"
string(2) "Φ"
string(2) "Φ"
string(1) "1"
int(65)
int(65)

참고

IntlChar
PHP Manual