note 47074 added to control-structures.for

It is intersting how to use a structure that can substitue "for". In the next lines, for instance, I create a function that get the smallest free_id for a table. It has good applications for the phpBB forum. <?php function assign_free_id($table, $id_field) { global $db; $sql = "SELECT $id_field FROM $table WHERE 1 ORDER BY $id_field ASC"; if( !$result = $db->sql_query($sql) ) { message_die(GENERAL_ERROR, "Couldn't get id parameters for all the elements of the table", "", __LINE__, __FILE__, $sql); } while ($arr = $db->sql_fetchrow($result)) { $row[]=$arr; } $max_elements = count($row); if ($max_elements==0) { $id= 1; return ($id); } //here I could insert a double-for structure, but I did as it follows, and I think it is more easy to process. //local variable defining.... $i=1; for ( $j=0; $j<$max_elements; $j++) { if ($i==intval($row[$j][0])) { // ...go to next cycle $i++; } else { $id=$i; return $id; } } } ?> ---- Manual Page -- http://www.php.net/manual/en/control-structures.for.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+47074 Delete -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+47074&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+47074&report=yes Search -- http://master.php.net/manage/user-notes.php