Re: PHP and MySQL Problem (simple, I'm sure)

From: Date: Sun, 22 Oct 2000 15:50:40 +0000
Subject: Re: PHP and MySQL Problem (simple, I'm sure)
References: 1  Groups: php.general 
Request: Send a blank email to php-general+get-21641@lists.php.net to get a copy of this message
Yo, Are you sure you connected the database? That sounds like the error I get when I forget to connect. Also, I believe num rows is mysql_num_rows() not mysql_numrows(); You should be using mysql_fetch_array(); mysql_result() is extremely slow, especially for such a large result set. After your query...do this: while($row = mysql_fetch_array($result)) { extract($row); echo "This tub has $filtration filtration, $water_care water_care, and costs $price dollars<BR>\n"; // more code here... } The while will execute as long as it has rows to fetch. mysql_fetch_array() will return an assoc array like so $row["column_name"] = value; echo $row["header"]; // displays the value in header. Although, most of us find this a hassle when outputting lots of variables in strings.... So, I use the extract() command. extract() takes that assoc array and makes the keys into normal variables. $row["header"] becomes $header; This way out can just output the values right in the string without having to end and start the string like: echo "This is a value $column_name<BR>\n"; instead of: echo "This is a value: " . $row["column_name"] . "<BR>\n"; Hope that helps. ----- Original Message ----- From: "Ben Ocean" <lists@TheWebsons.com> To: <php-general@lists.php.net> Sent: Sunday, October 22, 2000 9:10 AM Subject: [PHP] PHP and MySQL Problem (simple, I'm sure) > Hi; > I'm taking a script I wrote that worked for one client and trying to tweak > it for another client. These clients are built on the same server. I have > run into this error message: > > Warning: 0 is not a MySQL result index in > /apache/vhosts/thewebsons/Clients/NWHotSpring/Spas/Find_the_Perfect_Spa/inde x.php3 > on line 81 > > Here is the script circa line 81... > > if ($colorz != 9 ) { // ADD THIS LATER && $seatingz !=9 && $typez > != 9) { > echo "<center><font style=\"font: 800 25px > futura\">Here's Your > Spas!</font></center>"; > echo "Click on any spa."; > /* LINE 80 */ $result = mysql_query("SELECT id, seating, color_one, > color_two, color_three, type, name, jets, jets_one, jets_two, jets_three, > jets_four, jets_five, jets_six, jet_system, dimensions, capacity, dry, > filled, light, control, heater, thermostat, jetPumps, circulationPump, > filter, filtration, water_care, price FROM spas ORDER BY price DESC"); > $total_rows = mysql_numrows($result); $counter = 0; $countertwo = 0; > while($counter < $total_rows): > do a bunch of stuff... > > Can someone please help me? > > Also, I'm wondering if there's a more elegant way to label variables than this: > $seatingee = mysql_result($result,$counter,"seating"); > If I don't need *seating* any more, can I simply call the result *$seating* > instead of *$seatingee* ? > TIA, > BenO > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net >

« previous php.general (#21641) next »