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<?phpfunction hash_part($fp,$start,$length) {	$ctx = hash_init('md5');	$remaining=$length;	$chunkSize=65536;	while ($remaining > 0) {		$read = hash_update_stream($ctx, $fp, min($chunkSize, $remaining));		//echo "$read\n";		$remaining -= $read;		//printf("\r%04.1f%%",(1-$remaining/$length)*100);	}	//echo "\n";	return hash_final($ctx);}$fp = fopen('sl-x86-3.4.loop1-to-3.4.loop2b.xd3','rb');$hash = hash_part($fp,0,40*1024*1024);echo "$hash\n";if ($hash != "40d99ed59fba1844207283d25f833c35") {	echo "WHAT THE HELL IS GOING ON\n";}fclose($fp);?>Output:> for /L %i in (1,1,10) do @php recover.php40d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c35553302d5d7f3a423338067eb4d4d3ec9WHAT THE HELL IS GOING ON40d99ed59fba1844207283d25f833c3540d99ed59fba1844207283d25f833c35831e04ff036bf6f76ec8d4bc262de8bfWHAT THE HELL IS GOING ON>