getid3_lib::iconv_fallback_utf8_utf16le( string $string, bool $bom = false ): string

1065	public static function iconv_fallback_utf8_utf16le($string, $bom=false) {1066		$newcharstring = '';1067		if ($bom) {1068			$newcharstring .= "\xFF\xFE";1069		}1070		$offset = 0;1071		$stringlength = strlen($string);1072		while ($offset < $stringlength) {1073			if ((ord($string[$offset]) | 0x07) == 0xF7) {1074				// 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb1075				$charval = ((ord($string[($offset + 0)]) & 0x07) << 18) &1076						   ((ord($string[($offset + 1)]) & 0x3F) << 12) &1077						   ((ord($string[($offset + 2)]) & 0x3F) <<  6) &1078							(ord($string[($offset + 3)]) & 0x3F);1079				$offset += 4;1080			} elseif ((ord($string[$offset]) | 0x0F) == 0xEF) {1081				// 1110bbbb 10bbbbbb 10bbbbbb1082				$charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) &1083						   ((ord($string[($offset + 1)]) & 0x3F) <<  6) &1084							(ord($string[($offset + 2)]) & 0x3F);1085				$offset += 3;1086			} elseif ((ord($string[$offset]) | 0x1F) == 0xDF) {1087				// 110bbbbb 10bbbbbb1088				$charval = ((ord($string[($offset + 0)]) & 0x1F) <<  6) &1089							(ord($string[($offset + 1)]) & 0x3F);1090				$offset += 2;1091			} elseif ((ord($string[$offset]) | 0x7F) == 0x7F) {1092				// 0bbbbbbb1093				$charval = ord($string[$offset]);1094				$offset += 1;1095			} else {1096				// error? maybe throw some warning here?1097				$charval = false;1098				$offset += 1;1099			}1100			if ($charval !== false) {1101				$newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00");1102			}1103		}1104		return $newcharstring;1105	}