note 56179 added to function.chr

Based on Mike's code, here are some handy functions to convert integer numbers into an alphanumeric form based on a custom character set. Meaning, the array $chrs can include anything, and as long as the same $chrs is used in the decoding, it will always work. I am using it a condense a generated ID that gets displayed. e.g., g5 = 997, 10000093 = FXtP -- Much shorter! Elijah ----------------------------------------------------------- $chrs = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S' ,'T', 'U', 'V', 'W', 'X', 'Y', 'Z'); function int_to_alph($int, $chrs) { $base = sizeof($chrs); do { $alph = $chrs[($int % $base)] . $alph; } while($int = intval($int / $base)); return $alph; } function alph_to_int($alph, $chrs) { $base = sizeof($chrs); for($i = 0, $int = 0; $i < strlen($alph); $i++) { $int += intval(array_search(substr($alph, strlen($alph) - $i - 1, 1), $chrs)) * pow($base, $i); } return $int; } ---- Manual Page -- http://www.php.net/manual/en/function.chr.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56179 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56179&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56179&report=yes Search -- http://master.php.net/manage/user-notes.php