note 72591 added to function.unpack

An simple function to decode active directory sid function sid_decode($osid) { $sid=false; $u=unpack("H2rev/H2b/nc/Nd/V*e", $osid); if ($u) { $n232=pow(2,32); unset($u["b"]); // unused $u["c"]= $n232*$u["c"]+$u["d"]; unset($u["d"]); $sid="S"; foreach ($u as $v) { if ($v < 0) $v=$n232 + $v; $sid.= "-".$v; } } return $sid; } // example $osid64="AQUAAAAAAAUVAAAA3DixrE8XmGks/zdlAwIAAA=="; print sid_decode(base64_decode($osid64)); // display : S-01-5-21-2897295580-1771575119-1698168620-515 ---- Server IP: 195.221.21.36 Probable Submitter: 217.167.49.148 (proxied: unknown) ---- Manual Page -- http://www.php.net/manual/en/function.unpack.php Edit -- https://master.php.net/note/edit/72591 Del: integrated -- https://master.php.net/note/delete/72591/integrated Del: useless -- https://master.php.net/note/delete/72591/useless Del: bad code -- https://master.php.net/note/delete/72591/bad+code Del: spam -- https://master.php.net/note/delete/72591/spam Del: non-english -- https://master.php.net/note/delete/72591/non-english Del: in docs -- https://master.php.net/note/delete/72591/in+docs Del: other reasons-- https://master.php.net/note/delete/72591 Reject -- https://master.php.net/note/reject/72591 Search -- https://master.php.net/manage/user-notes.php