IntlChar::iscntrl
IntlChar::iscntrl
(PHP 7)
IntlChar::iscntrl — Check if code point is a control character
Description
public static bool IntlChar::iscntrl ( mixed $codepoint )
Determines whether the specified code point is a control character.
A control character is one of the following:
- ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
-
IntlChar::CHAR_CATEGORY_CONTROL_CHAR
(Cc) -
IntlChar::CHAR_CATEGORY_FORMAT_CHAR
(Cf) -
IntlChar::CHAR_CATEGORY_LINE_SEPARATOR
(Zl) -
IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR
(Zp)
Parameters
Return Values
Returns TRUE
if codepoint
is a control character, FALSE
if not.
Examples
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}")); ?>
The above example will output:
bool(false) bool(false) bool(true) bool(true)
See Also
- IntlChar::isprint() - Check if code point is a printable character
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/intlchar.iscntrl.php