IntlChar::isISOControl
(PHP 7, PHP 8)
IntlChar::isISOControl — Check if code point is an ISO control code
说明
public static IntlChar::isISOControl(int|string
$codepoint): ?boolDetermines 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.
0x2603for 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. Returns null on failure.
范例
示例 #1 Testing different code points
<?php
var_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)
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