wp-includes/ID3/module.tag.id3v2.php:3223$indexint$returnarraybooloptionalfalsearray|string public static function APICPictureTypeLookup($index, $returnarray=false) { static $APICPictureTypeLookup = array( 0x00 => 'Other', 0x01 => '32x32 pixels \'file icon\' (PNG only)', 0x02 => 'Other file icon', 0x03 => 'Cover (front)', 0x04 => 'Cover (back)', 0x05 => 'Leaflet page', 0x06 => 'Media (e.g. label side of CD)', 0x07 => 'Lead artist/lead performer/soloist', 0x08 => 'Artist/performer', 0x09 => 'Conductor', 0x0A => 'Band/Orchestra', 0x0B => 'Composer', 0x0C => 'Lyricist/text writer', 0x0D => 'Recording Location', 0x0E => 'During recording', 0x0F => 'During performance', 0x10 => 'Movie/video screen capture', 0x11 => 'A bright coloured fish', 0x12 => 'Illustration', 0x13 => 'Band/artist logotype', 0x14 => 'Publisher/Studio logotype' ); if ($returnarray) { return $APICPictureTypeLookup; } return (isset($APICPictureTypeLookup[$index]) ? $APICPictureTypeLookup[$index] : ''); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.tag.id3v2.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.