PHP 字元轉換二、八、十、十六進位

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

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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) { $newstring .= pack(&quot;C&quot;, hexdec(substr($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; }

引用：Nightmare的胡言亂語-利用PHP來做字元碼轉換(Binary、ASCII、HEX互轉)