psCheckSum()
XOR Checksum
Description:
Returns an XOR checksum in hex
Usage:
$chkSum = psCheckSum($str);
Example:
$str="this is a test";
$chkSum = psCheckSum($str);
Code:
function psCheckSum($str)
{
$chk = 0;
for($k = 0; $k < strlen($str); $k++)
{
$o = ord(substr($str,$k,1));
$chk = $chk ^ $o;
}
$res = substr("0" . dechex($chk),-2);
return $res;
}
Changlelog:
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