note 99783 added to function.uniqid

I just used the MySQL UUID() function as suggested by another commenter. However, dashed hex strings are kind of silly index columns when you've got binary fields. Here're some concise utilities for going back and forth. Not sure if it's worth the round trip time (SELECT -> convert -> INSERT). If anyone knows a way to shorten up the second one, I'd love to know! /** * Converts a default textual representation of a UUID to a binary one. * * @param string $uuid * @return string A 16-byte binary string. */ function uuid2bin($uuid) { return implode('', array_map('chr', sscanf( str_replace('-', '', $uuid), str_repeat('%2x', 16) ))); } /** * Converts a binary representation of a UUID to a default textual one. * * @param string $bin A 16-byte binary string. * @return string */ function bin2uuid($bin) { $uuidWithoutDashes = str_split(bin2hex($bin), 2); $uuidParts = array(); foreach (array(4, 2, 2, 2, 6) as $byteCount) $uuidParts[] = implode('', array_splice($uuidWithoutDashes, 0, $byteCount)); return implode('-', $uuidParts); } ---- Server IP: 64.71.164.2 Probable Submitter: 208.85.207.115 ---- Manual Page -- http://www.php.net/manual/en/function.uniqid.php Edit -- https://master.php.net/note/edit/99783 Del: integrated -- https://master.php.net/note/delete/99783/integrated Del: useless -- https://master.php.net/note/delete/99783/useless Del: bad code -- https://master.php.net/note/delete/99783/bad+code Del: spam -- https://master.php.net/note/delete/99783/spam Del: non-english -- https://master.php.net/note/delete/99783/non-english Del: in docs -- https://master.php.net/note/delete/99783/in+docs Del: other reasons-- https://master.php.net/note/delete/99783 Reject -- https://master.php.net/note/reject/99783 Search -- https://master.php.net/manage/user-notes.php