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IntlChar::isISOControl

PHP function Edit on GitHub ✎

(PHP 7, PHP 8)

Check if code point is an ISO control code

Description

IntlChar::isISOControl(int|string $codepoint): bool|null

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").

Returns true if codepoint is an ISO control code, false if not. Returns null on failure.

Example

php

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

The above example will output:

output

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