note 71356 added to function.bin2hex

I also wished to have the ability to translate a string containing a binary number ('1101') to a string containing a hexadecimal number ('d'). Here is my function: function strbin2hex($bin){ $last = strlen($bin)-1; for($i=0; $i<=$last; $i++){ $x += $bin[$last-$i] * pow(2,$i); } return dechex($x); } Example: strbin2hex('1101'); // returns 'd' I also added some optional features to my function (zero padding and upper case hex letters): function strbin2hex($bin, $pad=false, $upper=false){ $last = strlen($bin)-1; for($i=0; $i<=$last; $i++){ $x += $bin[$last-$i] * pow(2,$i); } $x = dechex($x); if($pad){ while(strlen($x) < intval(strlen($bin))/4){ $x = "0$x"; } } if($upper){ $x = strtoupper($x); } return $x; } Examples: strbin2hex('11110101', true, true); // returns 'F5' strbin2hex('00001011', true, true); // returns '0B' ---- Server IP: 216.194.113.175 Probable Submitter: 70.190.126.80 ---- Manual Page -- http://www.php.net/manual/en/function.bin2hex.php Edit -- https://master.php.net/note/edit/71356 Del: integrated -- https://master.php.net/note/delete/71356/integrated Del: useless -- https://master.php.net/note/delete/71356/useless Del: bad code -- https://master.php.net/note/delete/71356/bad+code Del: spam -- https://master.php.net/note/delete/71356/spam Del: non-english -- https://master.php.net/note/delete/71356/non-english Del: in docs -- https://master.php.net/note/delete/71356/in+docs Del: other reasons-- https://master.php.net/note/delete/71356 Reject -- https://master.php.net/note/reject/71356 Search -- https://master.php.net/manage/user-notes.php