(PHP 7, PHP 8)
IntlChar::totitle — Make Unicode character titlecase
The given character is mapped to its titlecase equivalent. If the character has no titlecase equivalent, the original character itself is returned.
codepointThe int 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_Titlecase_Mapping of the code point, if any; otherwise the code point itself.
The return type will be int 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::totitle("A"));
var_dump(IntlChar::totitle("a"));
var_dump(IntlChar::totitle("Φ"));
var_dump(IntlChar::totitle("φ"));
var_dump(IntlChar::totitle("1"));
var_dump(IntlChar::totitle(ord("A")));
var_dump(IntlChar::totitle(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)