<!DOCTYPE html>
<html>
<body>
<?php
$bin = "Wikimass.com";
echo "<br>convert binary to hexadecimal";
$hex = bin2hex($bin);
echo "<br> hexadecimal = " .$hex;
echo "<br>convert hexadecimal back to binary";
$bin = hex2bin($hex);
echo "<br> binary = " .$bin;
echo "<br>convert hexadecimal back to binary";
$bin1 = pack("H*", $hex);
echo "<br> binary = " .$bin1;
?>
</body>
</html>