(PHP 7, PHP 8)
IntlChar::isISOControl — Check if code point is an ISO control code
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").
示例 #1 Testing different code points
<?php
var_dump(IntlChar::isISOControl(" "));
var_dump(IntlChar::isISOControl("\n"));
var_dump(IntlChar::isISOControl("\u{200e}"));
?>
以上示例会输出:
bool(false) bool(true) bool(false)