PHP MYSQL Multiple If Statements for Multiple UPDATES - php

Question

Can someone tell me what is wrong with these IF statements?
if(isset($_POST['submit']))
{
$dropship = $unitid['id'];
$jumpship = $_POST['jumpship'];
$dsdest = $_POST['planet'];
$dslz = $_POST['landingzone'];
$dsmission = $_POST['mission'];
$ds1 = mysql_query("SELECT id, ds1 FROM gc3025_game_jumpships WHERE `id`='$jumpship'");
$ds2 = mysql_query("SELECT id, ds2 FROM gc3025_game_jumpships WHERE `id`='$jumpship'");
$ds3 = mysql_query("SELECT id, ds3 FROM gc3025_game_jumpships WHERE `id`='$jumpship'");
$dist_loc_get2 = mysql_query("SELECT * FROM gc3025_dist_game WHERE `planet`='$dsdest' AND `districtid`='$dslz'");
$distloc2 = mysql_fetch_assoc($dist_loc_get2);
$newdist = $distloc2['g_district'];
$ds_name_get = mysql_query("SELECT * FROM gc3025_game_dropships WHERE `id`='$dropship'");
$ds_name = mysql_fetch_assoc($ds_name_get);
$dsname = $ds_name['unit_name'];
$dest_name_get = mysql_query("SELECT gc3025_planets_game.Game, gc3025_planets_game.owners, gc3025_planets_game.g_planet, gc3025_planets_game.Planet_id, gc3025_planets_id.planet_name FROM gc3025_planets_id JOIN gc3025_planets_game ON gc3025_planets_id.id = gc3025_planets_game.Planet_id WHERE `g_planet`='$dsdest'");
$dest_name = mysql_fetch_assoc($dest_name_get);
$destname = $dest_name['planet_name'];
$dsdz_name_get = mysql_query("Select gc3025_dist_game.districtid, gc3025_dist_game.g_district, gc3025_dist_labels.id, gc3025_dist_labels.dist_name FROM gc3025_dist_game JOIN gc3025_dist_labels ON gc3025_dist_game.districtid = gc3025_dist_labels.id WHERE `g_district`='$newdist'");
$dsdz_name = mysql_fetch_assoc($dsdz_name_get);
$dsdzname = $dsdz_name['dist_name'];
$dsmission_name_get = mysql_query("SELECT * FROM gc3025_movement_dropdowns WHERE `id`='$dsmission'");
$dsmission_name = mysql_fetch_assoc($dsmission_name_get);
$dsmissionname = $dsmission_name['mission_type'];
if ($ds1 == 0){
mysql_query ("UPDATE `gc3025_game_jumpships` SET `ds1` = '$dsname', `ds1dest` = '$destname', `ds1dz` = '$dsdzname', `ds1mission` = '$dsmissionname' WHERE `id`='$jumpship'");
}
if ($ds1 == 1){
mysql_query ("UPDATE `gc3025_game_jumpships` SET `ds2` = '$dsname', `ds2dest` = '$destname', `ds2dz` = '$dsdzname', `ds2mission` = '$dsmissionname' WHERE `id`='$jumpship'");
}
if ($ds2 == 1){
mysql_query ("UPDATE `gc3025_game_jumpships` SET `ds3` = '$dsname', `ds3dest` = '$destname', `ds3dz` = '$dsdzname', `ds3mission` = '$dsmissionname' WHERE `id`='$jumpship'");
}
if ($ds3 == 1){
echo "This Jumpship is Full!";
}
echo "<p>$dsname Loaded on $jumpship going to $destname and to complete $dsmissionname In District $dsdzname!</p>";
Hope this is enough.
Basically the table is for a jumpship that carries 3 dropships. I need the if statement to basically If ds1 has a dropship in it then the dropship will be entered to ds2 column. if there is a dropship in ds1 and ds2 then it will update ds3 column. if all three have dropships in them then the echo "this jumpship is full" will post.

Answer 1

Function mysql_query returns resource, and you must use mysql_fetch_assoc for data extraction. Besides, data inside the query should be properly escaped.
$ds_query = mysql_query(sprintf(
"SELECT ds1, ds2, ds3 FROM gc3025_game_jumpships WHERE `id`='%s'",
mysql_real_escape_string($jumpship)
));
$ds_result = mysql_fetch_assoc($ds_query);
if (!$ds_result['ds1'])
{
mysql_query(sprintf(
"UPDATE `gc3025_game_jumpships` " .
"SET `ds1` = '%s', `ds1dest` = '%s', `ds1dz` = '%s', `ds1mission` = '%s' " .
"WHERE `id`='%s'",
mysql_real_escape_string($dsname),
mysql_real_escape_string($destname),
mysql_real_escape_string($dsdzname),
mysql_real_escape_string($dsmissionname),
mysql_real_escape_string($jumpship)
));
}
elseif ($ds_result['ds1'])
{
// and so on
}
elseif ($ds_result['ds2'])
{
// and so on
}