Enclosure::get_real_type( bool $find_handler = false ): string|null

1056    public function get_real_type(bool $find_handler = false)1057    {1058        // Mime-types by handler.1059        $types_flash = ['application/x-shockwave-flash', 'application/futuresplash']; // Flash1060        $types_fmedia = ['video/flv', 'video/x-flv','flv-application/octet-stream']; // Flash Media Player1061        $types_quicktime = ['audio/3gpp', 'audio/3gpp2', 'audio/aac', 'audio/x-aac', 'audio/aiff', 'audio/x-aiff', 'audio/mid', 'audio/midi', 'audio/x-midi', 'audio/mp4', 'audio/m4a', 'audio/x-m4a', 'audio/wav', 'audio/x-wav', 'video/3gpp', 'video/3gpp2', 'video/m4v', 'video/x-m4v', 'video/mp4', 'video/mpeg', 'video/x-mpeg', 'video/quicktime', 'video/sd-video']; // QuickTime1062        $types_wmedia = ['application/asx', 'application/x-mplayer2', 'audio/x-ms-wma', 'audio/x-ms-wax', 'video/x-ms-asf-plugin', 'video/x-ms-asf', 'video/x-ms-wm', 'video/x-ms-wmv', 'video/x-ms-wvx']; // Windows Media1063        $types_mp3 = ['audio/mp3', 'audio/x-mp3', 'audio/mpeg', 'audio/x-mpeg']; // MP31064 1065        $type = $this->get_type();1066        if ($type !== null) {1067            $type = strtolower($type);1068        }1069 1070        // If we encounter an unsupported mime-type, check the file extension and guess intelligently.1071        if (!in_array($type, array_merge($types_flash, $types_fmedia, $types_quicktime, $types_wmedia, $types_mp3))) {1072            $extension = $this->get_extension();1073            if ($extension === null) {1074                return null;1075            }1076 1077            switch (strtolower($extension)) {1078                // Audio mime-types1079                case 'aac':1080                case 'adts':1081                    $type = 'audio/acc';1082                    break;1083 1084                case 'aif':1085                case 'aifc':1086                case 'aiff':1087                case 'cdda':1088                    $type = 'audio/aiff';1089                    break;1090 1091                case 'bwf':1092                    $type = 'audio/wav';1093                    break;1094 1095                case 'kar':1096                case 'mid':1097                case 'midi':1098                case 'smf':1099                    $type = 'audio/midi';1100                    break;1101 1102                case 'm4a':1103                    $type = 'audio/x-m4a';1104                    break;1105 1106                case 'mp3':1107                case 'swa':1108                    $type = 'audio/mp3';1109                    break;1110 1111                case 'wav':1112                    $type = 'audio/wav';1113                    break;1114 1115                case 'wax':1116                    $type = 'audio/x-ms-wax';1117                    break;1118 1119                case 'wma':1120                    $type = 'audio/x-ms-wma';1121                    break;1122 1123                case '3gp':1124                case '3gpp':1125                    // Video mime-types1126                    $type = 'video/3gpp';1127                    break;1128 1129                case '3g2':1130                case '3gp2':1131                    $type = 'video/3gpp2';1132                    break;1133 1134                case 'asf':1135                    $type = 'video/x-ms-asf';