//字符串转二进制
function strToBin($str){
$arr = preg_split('/(?<!^)(?!$)/u', $str);
foreach($arr as &$v){
$temp = unpack('H*', $v);
$v = base_convert($temp[1], 16, 2);
unset($temp);
}
return join(' ',$arr);
}
//二进制转字符串
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);
}
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