(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)
Returns true if
codepoint is a control character, false if not. Returns null on failure.
Example #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}"));
?>Il precedente esempio visualizzerà:
bool(false) bool(false) bool(true) bool(true)
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT