Php/docs/intlchar.isisocontrol

• PHP Manual
• IntlChar
• Check if code point is an ISO control code

IntlChar::isISOControl

(PHP 7)

IntlChar::isISOControl — Check if code point is an ISO control code

说明

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

Determines whether the specified code point is an ISO control code.

true for U+0000..U+001f and U+007f..U+009f (general category "Cc").

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 ISO control code, false if not.

范例

Example #1 Testing different code points

<?phpvar_dump(IntlChar::isISOControl(" "));var_dump(IntlChar::isISOControl("\n"));var_dump(IntlChar::isISOControl("\u{200e}"));?>

以上例程会输出：

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

参见

• IntlChar::iscntrl() - Check if code point is a control character