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Posted by Dan Trainor on 08/21/05 14:24
Hello, all -
As a pet project of mine, I've decided to write a bit of code. This is
what I have, and it's not working as expected:
if ($action == "prepareforupdate") {
@unlink("UPDATES/".$id."/9.jpg");
$query0 = "SELECT * FROM updates WHERE id=".$id."";
if (!$dbdata = mysql_query($query0)) {
echo "Can't run query: ".mysql_error();
die;
};
for ($i = 9; $i >= 0; $i--) {
$j = $i - 1;
echo "Getting ready to rename UPDATES/$id/$j.jpg to
UPDATES/$id/$i.jpg || <br />";
@rename("UPDATES/$id/$j.jpg","UPDATES/$id/$i.jpg");
$returned = mysql_fetch_assoc($dbdata);
$query1 = "UPDATE updates SET " . $i . "d = '"
.$returned[$j."d"]. "' WHERE id='" . $id . "'";
if (!mysql_query($query1)) {
echo "MySQL Error: ".mysql_error();
};
}
}
I have a database in the following format. Let's say that "d" stands
for date, and "t" stands for times, and I have ten days' worth of
archives going on:
|id|1d|1t|2d|2t|3d|3t|.......|8d|8t|9d|9t|
I'm trying to "move" the contents of the previous field to the logical
next field, so the value of field "8d" becomes "9d", the value of "7t"
becomes the value of "8t", and so on.
The problem that I'm having here is that only the first iteration of the
for loop work properly. Everything after that, is not being pulled up
properly, I suspect. This is what MySQL shows:
174 Query SELECT * FROM updates WHERE id=5
174 Query UPDATE updates SET 9d = '2005-08-21' WHERE id='5'
174 Query UPDATE updates SET 8d = '' WHERE id='5'
.....
174 Query UPDATE updates SET 1d = '' WHERE id='5'
174 Query UPDATE updates SET 0d = '' WHERE id='5'
So all in all, I think I might be a bit out of my league here, but I am
eager to learn. I think of this as more of a dynamic approach to a
situation that I'm trying to adapt to.
As always, any feedback, or flames for that matter, would be greatly
appreciated.
Thanks
-dant
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