WP_HTML_Decoder::code_point_to_utf8_bytes( int $code_point ): string

Encode a code point number into the UTF-8 encoding.

Description

This encoder implements the UTF-8 encoding algorithm for converting a code point into a byte sequence. If it receives an invalid code point it will return the Unicode Replacement Character U+FFFD �.

Example:

'🅰' === WP_HTML_Decoder::code_point_to_utf8_bytes( 0x1f170 );

// Half of a surrogate pair is an invalid code point.
'�' === WP_HTML_Decoder::code_point_to_utf8_bytes( 0xd83c );

Parameters

$code_pointintrequired: Which code point to convert.

Return

string Converted code point, or � if invalid.

Source

public static function code_point_to_utf8_bytes( $code_point ): string {
	$string = mb_chr( $code_point, 'UTF-8' );

	return false !== $string ? $string : '�';
}

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Used by	Description
WP_HTML_Decoder::read_character_reference()`wp-includes/html-api/class-wp-html-decoder.php`	Attempt to read a character reference at the given location in a given string, depending on the context in which it’s found.

Changelog

Version	Description
6.6.0	Introduced.

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