Greg, thank you for all this... See below
Greg Donald wrote:
On 6/2/05, Jack Jackson <jackson.linux@xxxxxxxxx> wrote:
Thanks for the reply, Greg,
I see how that is useful. I am confused as to how I would implement it
here. Please bear with me as I am a newbie and am now perhaps more
confused than ever!:
Bummer, sorry.
Twasn't you; were me.
I'm trying to use the number given in the $_GET URL to build one piece
of the sql:
If there is anything set in the $_GET field other than ?c=[valid int] or
?p=[valid int] or ?s=[valid int] then I want to bounce to a plain index.
if( !( isset( $_GET[ 'c' ] ) && is_int( $_GET[ 'c' ] )
|| isset( $_GET[ 'p' ] ) && is_int( $_GET[ 'p' ] )
|| isset( $_GET[ 's' ] ) && is_int( $_GET[ 's' ] ) ) )
{
header( 'Location: index.php' );
exit;
}
Of course, that almost did it. But I wanted to do it it *weren't* an
int. I put a ! in front and that works like a charm!
If it's a valid int (a positive int which corresponds to a valid row)
then I want to set its value to the appropriate variable: either $c, $p
or $s,
If it's in the URL it's already set as $_GET[ 'c' ], $_GET[ 'p' ], or
$_GET[ 's' ].
I get it. Thanks for that. Including it in the sql didn't work as you
suggested:
<?php //IF there is a valid query by cartoon, use $c to build the SQL
$fields = 'SELECT art.*,publisher.*,subject.*';
$from = 'FROM art,subject
LEFT JOIN publisher
ON publisher.publisher_id=art.publisher_id';
$sort = "ORDER BY art.art_pub_date";
$where = "WHERE art.art_id = '$c' AND
WHERE art.art_id = '$_GET[c]'
I guess it was missing a print command or something. I did this up top
though:
$c = intval($_GET['c']);
$p = intval($_GET['p']);
$s = intval($_GET['s']);
and then did it as I had it in the sample above and it worked like a
charm, too.
subject.subject_id=art.subject_id";
?>
If that were instead a $p then I would do:
<?php //IF there is a valid query by publisher, use $p to build the SQL
$fields = "SELECT art.*,publisher.*,subject.*";
$from = "FROM art,subject
LEFT JOIN publisher
ON publisher.publisher_id=art.publisher_id";
$where = "WHERE publisher.publisher_id=art.publisher_id AND
art.publisher_id = '$p' AND
art.publisher_id = '$_GET[p]' AND
subject.subject_id=art.subject_id";
?>
If that were instead an $s then I would do:
<?php //IF there is a valid query by subject, use $s to build the SQL
$fields = "SELECT art.*,publisher.*,subject.*";
$from = "FROM art,subject
LEFT JOIN publisher
ON publisher.publisher_id=art.publisher_id";
$where = "WHERE publisher.publisher_id=art.publisher_id AND
art.subject_id = '1' AND
art.subject_id=subject.subject_id";
?>
I'm sure your method works ( ;) ). If I understand it, as my friend
Darrell said about your suggestion:
'...We iterate through the array seeing if there's a submitted HTML form
field name that matches the current database column name. If so, we add
the column name and the value submitted in the form to a string that is
being built into a database query.'
It's just a matter of checking for variables in the $_GET array and
doing what you need to do if they exist and are valid or not. Do you
know about print_r() yet?
echo '<pre>';
print_r( $_GET );
echo '</pre>';
I did and thank you. This is close to working, though I still have to
deal with what happens once I run those queries. But thanks for sorting
out that mess for me,. I really appreciate it.
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