Php/docs/intlchar.isupper

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IntlChar::isupper

(PHP 7)

IntlChar::isupperCheck if code point has the general category "Lu" (uppercase letter)


说明

public static IntlChar::isupper ( mixed $codepoint ) : bool

Determines whether the specified code point has the general category "Lu" (uppercase letter).

Note:

This misses some characters that are also uppercase but have a different general category value. In order to include those, use IntlChar::isUUppercase().

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 true if codepoint is an Lu uppercase letter, false if not.


范例

Example #1 Testing different code points

<?phpvar_dump(IntlChar::isupper("A"));var_dump(IntlChar::isupper("a"));var_dump(IntlChar::isupper("Φ"));var_dump(IntlChar::isupper("φ"));var_dump(IntlChar::isupper("1"));?>

以上例程会输出:


bool(true)
bool(false)
bool(true)
bool(false)
bool(false)

参见