valid_unicode( int $i )

Determines if a Unicode codepoint is valid.

Parameters

$i

(Required) Unicode codepoint.

Return

(bool) Whether or not the codepoint is a valid Unicode codepoint.

Source

File: wp-includes/kses.php 

function valid_unicode($i) {
	return ( $i == 0x9 || $i == 0xa || $i == 0xd ||
			($i >= 0x20 && $i <= 0xd7ff) ||
			($i >= 0xe000 && $i <= 0xfffd) ||
			($i >= 0x10000 && $i <= 0x10ffff) );
}

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Changelog

Changelog
Version Description
2.7.0 Introduced.