IntlChar::isISOControl

(PHP 7)

IntlChar::isISOControl — Check if code point is an ISO control code

public static bool IntlChar::isISOControl ( mixed $codepoint )

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").

codepoint

The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Returns TRUE if codepoint is an ISO control code, FALSE if not.

Example #1 Testing different code points

<?php
var_dump(IntlChar::isISOControl("?"));
var_dump(IntlChar::isISOControl("\n"));
var_dump(IntlChar::isISOControl("\u{200e}"));
?>

The above example will output:

bool(false)
bool(true)
bool(false)