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(PHP 7, PHP 8)
IntlChar::iscntrl — Check if code point is a control character
Determines whether the specified code point is a control character.
A control character is one of the following:
IntlChar::CHAR_CATEGORY_CONTROL_CHAR
(Cc)IntlChar::CHAR_CATEGORY_FORMAT_CHAR
(Cf)IntlChar::CHAR_CATEGORY_LINE_SEPARATOR
(Zl)IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR
(Zp)示例 #1 Testing different code points
<?php
var_dump(IntlChar::iscntrl("A"));
var_dump(IntlChar::iscntrl(" "));
var_dump(IntlChar::iscntrl("\n"));
var_dump(IntlChar::iscntrl("\u{200e}"));
?>
以上示例会输出:
bool(false) bool(false) bool(true) bool(true)
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT