valid_unicode( int $i ): bool

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Determines if a Unicode codepoint is valid.

Parameters

$iintrequired
Unicode codepoint.

Return

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

Source

function valid_unicode( $i ) {
	$i = (int) $i;

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

Changelog

VersionDescription
2.7.0Introduced.

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