PHP - Select From Database Query Not Filtering

Hi,

I had a form which contains, 8 select boxes. In those 8 select boxes, 3 of the boxes are interlinked, like, I am able to generate data in other 2 select boxes, if one box is been selected. i.e. based upon selection of one select box, and i am able to generate data in other select box. So, 3 select boxes are interlinked. And remaining 5 selects are optional, if the user selects, then we need to generate data based upon selection of the user.

Here the main issue is how to grab data in the post back form, like, how to capture the number of selects boxes selected and what are those selected, and based upon that we need to generate data.

Here one more important thing is that, in the report generation form(postback form), I need to show the data in a table. So , in table I had 9 columns and these would be common to whatever the selection made, but, only the requeired data would be changed based upon the selection of the remaining 5 optional boxes.

Hope you got me!!!!

Hello,

I need help filtering an SQL query based on the combination of drop down menus. I have tried using this code found in another thread but I am still getting all rows selected. Any ideas?? Thank you.

Here is my html
Code: [Select]
<form name="xml.php" method="POST">
            <input type="button" id="showmarkers" value="Show Markers" />&nbsp;&nbsp;
                <select name="meetingType">
                <option value="All Types" selected="All Types">All Types</option>           
                <option value="fun">fun</option>
                <option value="work">work</option>
                </select>&nbsp;&nbsp;
                <select name="meetingDay">
                <option value="All Days" selected="All Days">All Days</option>
                <option value="Monday">Monday</option>
                <option value="Tuesday">Tuesday</option>
                <option value="Wednesday">Wednesday</option>
                <option value="Thursday">Thursday</option>
                <option value="Friday">Friday</option>
                <option value="Saturday">Saturday</option>
                <option value="Sunday">Sunday</option>
                </select>&nbsp;&nbsp;
                <select name="meetingTime">
                <option value="All Times" selected="All Times">All Times</option>
                <option value="Early">Early</option>
                <option value="Noon">Noon</option>
                <option value="Late">Late</option>
                </select>
</form>

And the PHP:
Code: [Select]
$whereClauses = array();
if (! empty($_POST['meetingType'])) $whereClauses[] ="meetingType='".mysql_real_escape_string($_POST['meetingType'])."'";
if (! empty($_POST['meetingDay'])) $whereClauses[] ="meetingDay='".mysql_real_escape_string($_POST['meetingDay'])."'";
if (! empty($_POST['meetingTime'])) $whereClauses[] ="meetingTime='".mysql_real_escape_string($_POST['meetingTime'])."'";
$where = '';
if (count($whereClauses) > 0) { $where = ' WHERE '.implode(' AND ',$whereClauses); }
$resultID = mysql_query("SELECT * FROM meetings".$where);

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=358872.0

I'm trying to figure out how to filter the results of a database query.
For example somebody uses a php/javascript form to search for ford cars. When they see 100 results, they then narrow the results by model and/or color.

Am I right in thinking that the way to do this is by creating a temporary table of the results? What is the best approach to what I'm trying to do?

Hello all,   Based on the suggestion of you wonderful folks here, I went away for a few days (to learn about PDO and Prepared Statements) in order to replace the MySQLi commands in my code. That's gone pretty well thus far...with me having learnt and successfully replaced most of my "bad" code with elegant, SQL-Injection-proof code (or so I hope).   The one-and-only problem I'm having (for now at least) is that I'm having trouble understanding how to execute an UPDATE query within the resultset of a SELECT query (using PDO and prepared statements, of course).   Let me explain (my scenario), and since a picture speaks a thousand words I've also inlcuded a screenshot to show you guys my setup:   In my table I have two columns (which are essentially flags i.e. Y/N), one for "items alreay purchased" and the other for "items to be purchased later". The first flag, if/when set ON (Y) will highlight row(s) in red...and the second flag will highlight row(s) in blue (when set ON).   I initially had four buttons, two each for setting the flags/columns to "Y", and another two to reverse the columns/flags to "N". That was when I had my delete functionality as a separate operation on a separate tab/list item, and that was fine.   Now that I've realized I can include both operations (update and delete) on just the one tab, I've also figured it would be better to pare down those four buttons (into just two), and set them up as a toggle feature i.e. if the value is currently "Y" then the button will set it to "N", and vice versa.   So, looking at my attached picture, if a person selects (using the checkboxes) the first four rows and clicks the first button (labeled "Toggle selected items as Purchased/Not Purchased") then the following must happen:   1. The purchased_flag for rows # 2 and 4 must be switched OFF (set to N)...so they will no longer be highlighted in red. 2. The purchased_flag for row # 3 must be switched ON (set to Y)...so that row will now be highlighted in red. 3. Nothing must be done to rows # 1 and 5 since: a) row 5 was not selected/checked to begin with, and b) row # 1 has its purchase_later_flag set ON (to Y), so it must be skipped over.   Looking at my code below, I'm guessing (and here's where I need the help) that there's something wrong in the code within the section that says "/*** loop through the results/collection of checked items ***/". I've probably made it more complex than it should be, and that's due to the fact that I have no idea what I'm doing (or rather, how I should be doing it), and this has driven me insane for the last 2 days...which prompted me to "throw in the towel" and seek the help of you very helpful and intellegent folks. BTW, I am a newbie at this, so if I could be provided the exact code, that would be most wonderful, and much highly appreciated.   Thanks to you folks, I'm feeling real good (with a great sense of achievement) after having come here and got the great advice to learn PDO and prepared statements.   Just this one nasty little hurdle is stopping me from getting to "end-of-job" on my very first WebApp. BTW, sorry about the long post...this is the best/only way I could clearly explaing my situation.   Cheers guys!

case "update-delete":
	if(isset($_POST['highlight-purchased'])) 
		{
			// ****** Setup customized query to obtain only items that are checked ******
			$sql = "SELECT * FROM shoplist WHERE";
					for($i=0; $i < count($_POST['checkboxes']); $i++)
						{
							$sql=$sql . " idnumber=" . $_POST['checkboxes'][$i] . " or";
						}
					$sql= rtrim($sql, "or");
											
			$statement = $conn->prepare($sql);
			$statement->execute();
																						
			// *** fetch results for all checked items (1st query) *** //
			$result = $statement->fetchAll();

			$statement->closeCursor();
											
			// Setup query that will change the purchased flag to "N", if it's currently set to "Y"
			$sqlSetToN = "UPDATE shoplist SET purchased = 'N' WHERE purchased = 'Y'";
											
			// Setup query that will change the purchased flag to "Y", if it's currently set to "N", "", or NULL
			$sqlSetToY = "UPDATE shoplist SET purchased = 'Y' WHERE purchased = 'N' OR purchased = '' OR purchased IS NULL";

			$statementSetToN = $conn->prepare($sqlSetToN);
			$statementSetToY = $conn->prepare($sqlSetToY);
											
			/*** loop through the results/collection of checked items ***/
			foreach($result as $row)
				{
					if ($row["purchased"] != "Y")
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToY = $statementSetToY->fetch();
															
							foreach($resultSetToY as $row)
								{															
									$statementSetToY->execute();																
								}
						}
					else
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToN = $statementSetToN->fetch();
															
							foreach($resultSetToN as $row)
								{															
									$statementSetToN->execute();																
								}
						}
				}
				break;
		}

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