- hash: documentation ( source)
- unpack: documentation ( source)
- crc32: documentation ( source)
<?php
$finalData = "This is a test of crc32b why is this different";
echo crc32($finalData);
echo "\n";
$hash = hash('crc32b', $finalData, true);
$crc = unpack('V', );
echo $hash;
echo $crc[1];
echo "\n";