IntlChar::totitle

(PHP 7, PHP 8)

IntlChar::totitle — Make Unicode character titlecase

说明

public static IntlChar::totitle(int|string $codepoint): int|string|null

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

参数

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}")

返回值

Returns the Simple_Titlecase_Mapping of the code point, if any; otherwise the code point itself. Returns null on failure.

返回类型是 int，如果代码点作为 UTF-8 string 传递，则会返回 string 。失败时返回 null。

示例

示例 #1 Testing different code points

<?php
var_dump(IntlChar::totitle("Ǆ"));
var_dump(IntlChar::totitle("ǆ"));
var_dump(IntlChar::totitle("Φ"));
var_dump(IntlChar::totitle("φ"));
var_dump(IntlChar::totitle("1"));
var_dump(IntlChar::totitle("ᾳ");
var_dump(IntlChar::totitle(ord("A")));
?>

以上示例会输出：

string(1) "ǅ"
string(1) "ǅ"
string(2) "Φ"
string(2) "φ"
string(1) "1"
string(1) "ᾼ"
int(65)

参见

IntlChar::tolower() - Make Unicode character lowercase
IntlChar::toupper() - Make Unicode character uppercase
IntlChar::istitle() - Check if code point is a titlecase letter
mb_convert_case() - 对字符串进行大小写转换

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