Re: Pragmatically changing a "Record Number"
| From: | Chris | Date: | Mon, 03 Sep 2007 00:27:07 +0000 |
| Subject: | Re: Pragmatically changing a "Record Number" | ||
| References: | 1 2 3 4 5 6 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-261626@lists.php.net to get a copy of this message | ||
tedd wrote:
At 6:14 PM -0400 9/2/07, brian wrote:You are actually changing the id's in the database. Brian's example is making up an id to display (much like the excel row numbers) rather than actually changing the id in the database. -- Postgresql & php tutorials http://www.designmagick.com/tedd wrote:How is that contrary to what I said?Hi to the original poster: Snip -- a lot of discussion Use the following code at your own peril. $dbQuery = "ALTER TABLE $dbtable "; $dbQuery .= "DROP id, "; $dbQuery .= "ADD id INT UNSIGNED NOT NULL AUTO_INCREMENT,"; $dbQuery .= "AUTO_INCREMENT = 1"; $result = mysql_query($dbQuery) or die("Could not renumber dB $dbQuery" . mysql_error()); The reason for not wanting to care about the auto_increment id is that it is something that the database uses and really should not be changed. If you want to have a sequential record number, then add that field and alter it as you will, but leave the internal workings of database alone. However, if you wish not to understand how all that works, then use the code above -- it will renumber your auto_increment id leaving no gaps.At the risk of turning this into a truly marathon thread ... I don't think altering the id is necessary at all. The solution the OP seems to be looking for is to (as Graham has said) count off the rows as they are being printed using a variable. Using a table for clarity: <?php $sql = 'SELECT id, title FROM foo'; $result = mysql_query($sql); $count = 0; while (++$count && ($row = $result->fethchRow())) { ?> <tr> <td>row #<?= $count ?></td> <td><a href="foo.php?id=<?= $row['id'] ?>"><?= $row['title'] ?></a></td> </tr> <?php } It seems that all this is about is displaying a rowcount. The ids can be anything at all and it'll still look spiffy. brian