基于PHP实现解密或加密Cloudflar邮箱保护

<a class="__cf_email__" data-cfemail="30515253705152531e535f5d" href="/cdn-cgi/l/email-protection" rel="external nofollow" >
[email protected]
</a>
<script data-cfhash="f9e31" type="text/javascript">
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</script>

function deCFEmail($encode){
	$k = hexdec(substr($encode,0,2));
	for($i=2, $m=''; $i < strlen($encode) - 1; $i += 2){
		$m.=chr(hexdec(substr($encode, $i, 2))^$k);
	}
	return $m;
}
echo deCFEmail("30515253705152531e535f5d")."\n";

function encodeEmail($email, $key=0) {
	$chars = str_split($email);
	$string = '';
	$key = $key ? $key : rand(10, 99);
	foreach ($chars as $value) {
		$string .= sprintf("%02s", dechex(ord($value)^$key));
	}
	return dechex($key).$string;
}