wp-includes/ID3/module.audio.mp3.php:1835$head4string$allowBitrate15booloptionalfalsebool public static function MPEGaudioHeaderBytesValid($head4, $allowBitrate15=false) { return self::MPEGaudioHeaderValid(self::MPEGaudioHeaderDecode($head4), false, $allowBitrate15); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.audio.mp3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.