wp-includes/ID3/getid3.lib.php:1173UTF-16BE => ISO-8859-1
$stringstringstring public static function iconv_fallback_utf16be_iso88591($string) { if (substr($string, 0, 2) == "\xFE\xFF") { // strip BOM $string = substr($string, 2); } $newcharstring = ''; for ($i = 0; $i < strlen($string); $i += 2) { $charval = self::BigEndian2Int(substr($string, $i, 2)); $newcharstring .= (($charval < 256) ? chr($charval) : '?'); } return $newcharstring; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/getid3.lib.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.