Ordering table

Killkip · April 5, 2009

Hi,

So I'm trying to make this database of star systems. I'm having trouble sorting the results of my radius search function. You type in a star system and enter an x amount of ly. The code will calculate based off the systems coordinates which are in range and which are not. So the trouble is I want them to be able to select that the results are ordered by distance. Unfortunately like I said this distance is calculated and is not in the database, meaning a simple ORDER BY does not work.

This is my code:

<html>
<head>
<title>SQO Stellar Search Database</title>
</head>
<body>
<?php
$sn1=$_POST["sysname1"];
include("mysqlconnect.php");
$gb=$_POST['gb'];
$var=$_POST['var'];
$orderby=$_POST['orderby'];
$login = mysql_query("SELECT * FROM gebruikers WHERE gebruikersnaam='".$gb."'");
$results = mysql_num_rows($login); 
$gebr = mysql_fetch_array($login);
if ($results==1){
include("menu.php");
$max=50;}
else
{include("menu2.php");
$max=30;}
$sys1 = mysql_query("SELECT * FROM systems WHERE sysname='".$sn1."'");
if ($orderby==name){
$sys2 = mysql_query("SELECT * FROM systems ORDER BY sysname");}
else if ($orderby==starclass){
$sys2 = mysql_query("SELECT * FROM systems ORDER BY starclass, sysname");}
else {
$sys2 = mysql_query("SELECT * FROM systems");}

$tellen=mysql_num_rows($sys1);
$con1 = mysql_fetch_array($sys1);

   if ($tellen==1 && $var<=$max)
   {
   echo "<div id='content'>";
   echo "<h3><b>Systems in range</b></H3>";
echo '<TABLE BORDER="1">';
echo '<TR>';
echo '<TD WIDTH="200" bgcolor="#99CCFF">';
echo '<B>System name:</B>';

echo '</TD>'; 
   echo '<TD WIDTH="130" bgcolor="#99CCFF">'; echo '<B>Star class:</B>';
echo '</TD>'; 
   echo '<TD WIDTH="100" bgcolor="#99CCFF">'; echo '<B>Distance:</B> (ly)';
echo '</TD>'; 
echo '</TR>';

while ($row = mysql_fetch_array($sys2))
{
$Xverschil=$con1[Xcoord]-$row[Xcoord];
$Yverschil=$con1[Ycoord]-$row[Ycoord];
$Zverschil=$con1[Zcoord]-$row[Zcoord];
$distance=round(sqrt(pow($Xverschil,2)+pow($Yverschil,2)+pow($Zverschil,2)),2);
		if ($distance<$var and $distance<>0) 

{     

		echo '<TR>';
		echo '<TD WIDTH="200" bgcolor="white">';
	echo "$row[sysname] <FORM METHOD='post' ACTION='search2.php' style='display:inline; margin-top:0px; margin-bottom:0px;' ><INPUT name='sysname' type='hidden' VALUE='$row[sysname]'><INPUT name='gb' type='hidden' VALUE='$gebr[gebruikersnaam]'><input type=image name='formEditProfileSubmit' src='dubbelarrow.png'  value='Bewerk' ></form> ";

		echo '</TD>'; 
	echo '<TD WIDTH="130" bgcolor="white">'; 
	echo $row[starclass];
	echo '</TD>'; 	
	echo '<TD WIDTH="100" bgcolor="white">'; 
	echo $distance;
	echo '</TD>'; 	
	echo '</TR>';


	}else{}



} 
echo '</TABLE>';
echo '</div>'; 
}

else if ($var>$max && $results==0) {?><div id='content'>Maximum distance for guests is <?php echo "$max";?> ly</div> <?php
}
else if ($var>$max && $results==1) {?><div id='content'>Maximum distance is <?php echo "$max";?> ly</div> <?php
}
else 
{
?><div id='content'> System doesn't  excist in database.<BR><BR> Do you want to <A HREF='add.php'>add</A> the system to the SQO Stellar Search Database? </div> <?php
}
mysql_close();
?>
</body>
</html>

It may be a bit messy, but I have just 2 weeks of PHP experience. So is there anyone who can help me to order the table by distance?

Sign In

Ordering table

Recommended Posts

Killkip

Link to comment

Share on other sites

Join the conversation

Browse

Activity

Important Information