php 字符串与二进制互转

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开发教程：www.web3.xin"); echo BinToStr("1110000 1101000 1110000 111001001011101010001100 111001101010110010100001 111001011011110010000000 111001011000111110010001 111011111011110010011010 1110111 1110111 1110111 101110 1110000 1101000 1110000 110010 101110 1100011 1100011");