Convert (ABCDEF)16, (DEFACED)16,and (9A0B)16 from hexadecimal to binary. Solution Here is the answer and how it is figured!! See if this is what you are looking for (ABCDEF) 16, (DEFACED) 16, AND (9A0B) 16, in base 16, is 1110111110101101000000000000000000000000000000000000000000000000 in binary This function takes three arguments as follows base_convert($numberYouWantToConvert,$baseOfThatNumber, $baseToConvertTo). For example, running base_convert($hexInPut, 16, 2) will convert the the hexadecimal $hexInPut from base 16 to binary. And conversely, base_convert($binIn, 2, 16) converts the binary $binIn to hexadecimal. Hope this helps!!.