| 二進位 | 二進制 | （B，Binary） | 00000010=2 |
| 八進位 | 八進制 | （O，Octal） | 00000010=8 |
| 十進位 | 十進制 | （D，Decimalist） | 00000010=10 |
| 十進位 | 十六進制 | （H，Hex） | 00000010=16 |
Binary 跟 ASCII互轉
| function asc2bin($str) { $text_array = explode("\r\n", chunk_split($str, 1)); for ($n = 0; $n < count($text_array) - 1; $n++) { $newstring .= substr("0000".base_convert(ord($text_array[$n]), 10, 2), -8); } $newstring = chunk_split($newstring, 8, " "); return $newstring; } function bin2asc($str) { $str = str_replace(" ", "", $str); $text_array = explode("\r\n", chunk_split($str, 8)); for ($n = 0; $n < count($text_array) - 1; $n++) { $newstring .= chr(base_convert($text_array[$n], 2, 10)); } return $newstring; } |
ASCII 與 HEX互轉
| function asc2hex($str) { return chunk_split(bin2hex($str), 2, " "); } function hex2asc($str) { $str = str_replace(" ", "", $str); for ($n=0; $n<strlen($str); $n+=2) { $newstring .= pack("C", hexdec(substr($str, $n, 2))); } return $newstring; } |
Binary 與 HEX互轉
| function binary2hex($str) { $str = str_replace(" ", "", $str); $text_array = explode("\r\n", chunk_split($str, 8)); for ($n = 0; $n < count($text_array) - 1; $n++) { $newstring .= base_convert($text_array[$n], 2, 16); } $newstring = chunk_split($newstring, 2, " "); return $newstring; } function hex2binary($str) { $str = str_replace(" ", "", $str); $text_array = explode("\r\n", chunk_split($str, 2)); for ($n = 0; $n < count($text_array) - 1; $n++) { $newstring .= substr("0000".base_convert($text_array[$n], 16, 2), -8); } $newstring = chunk_split($newstring, 8, " "); return $newstring; } |
