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(PHP 7)
IntlChar::toupper — Make Unicode character uppercase
$codepoint
)The given character is mapped to its uppercase equivalent. If the character has no uppercase equivalent, the character itself is returned.
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}")
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.
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" )));
?>
以上例程会输出:
string(1) "A" string(1) "A" string(2) "Φ" string(2) "Φ" string(1) "1" int(65) int(65)