[代码]php代码：

?php

header(Content-type: text/html; charset=utf-8

/**

* 将字符串转换成二进制

* @param type $str

* @return type

*/

function StrToBin($str){

//1.列出每个字符

$arr = preg_split('/(?!^)(?!$)/u', $str);

//2.unpack字符

foreach($arr as $v){

$temp = unpack('H*', $v); $v = base_convert($temp[1], 16, 2);

unset($temp);

}

return join(' ',$arr);

}

/**

* 讲二进制转换成字符串

* @param type $str

* @return type

*/

function BinToStr($str){

$arr = explode(' ', $str);

foreach($arr as $v){

$v = pack(H.strlen(base_convert($v, 2, 16)), base_convert($v, 2, 16));

}

return join('', $arr);

}

echo StrToBin(php二次开发：www.php2.cc

echo '';

echo BinToStr(1110000 1101000 1110000 111001001011101010001100 111001101010110010100001 111001011011110010000000 111001011000111110010001 111011111011110010011010 1110111 1110111 1110111 101110 1110000 1101000 1110000 110010 101110 1100011 1100011