Ctype::ctype_cntrl( string|int $text )
Returns TRUE if every character in text is a control character from the current locale, FALSE otherwise.
Description
See also
Parameters
- $text
-
(string|int) (Required)
Return
(bool)
Source
File: vendor/symfony/polyfill-ctype/Ctype.php
public static function ctype_cntrl($text)
{
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^\x00-\x1f\x7f]/', $text);
}