从数据库对x.00 x.99之间的数字进行排序，依此类推

Question

As the title what I'm trying to do is get numbers from database which I already do display them from descending order which I do. Patch numbers are in format X.XX so 2.01 2.05 2.22 and so on I want to label numbers between 2.00 - 2.highest one as Season 2 so Season 2 then patches like 2.99 2.85 2.04 2.00 etc.

My PHP:

                foreach($patches as $patch)
                {
                    if(substr($patch, -2)=="00"){
                    echo 'Season '.substr($patch, 0,1).'<br>';}
                    echo '<a href="../index.php?Patch_No='.$patch.'" class="patches">'.$patch.'</a><br/>';

                }

And my query:

 $patches = $conn->prepare("SELECT Patch_No FROM info ORDER BY Patch_No DESC");
            $patches->execute();
            $patchesresult = $patches->get_result();
            while($data1 = $patchesresult->fetch_assoc()){
                $patch[$i]=$data1["Patch_No"];
                $i+=1;
            }

I probably have to check what is currently the highest patch so It could write first title Season XX

UPDATE - my 2D array:

$i=$j=0;
                    foreach($patches as $patch)
                    {
                        if($j!=0){
                            if(substr($patch, 0,1)!=substr($patch_array[$i][$j-1],0,1)){
                                $i+=1;
                                $j=0;
                            }
                        }   
                        echo '$patch_array['.$i.']['.$j.'] '.$patch_array[$i][$j]=$patch.' substr$patch='.substr($patch, 0,1).' substr_previous: '.substr($patch_array[$i][$j-1],0,1).'<br/>';
                        $j+=1;
                    }

The array saves under [$i][$j] $i - is for patches with the same first number so 2.xx 2.xx 2.xx will be under the same $i and $j are for endings .01 .03 .04 so [0][1] [0][2] [0][3] - {2.50 2.14 2.01} [1][1] [1][2] [1][3] - {3.03 3.10 3.02}

Now I need to figure out displaying bit second loop

Answer 1

I changed up some syntax and variable names to make it a bit less confusing, but I think this is what you are going for. Also changed (improved) your query syntax.

$patches = $conn->prepare("SELECT Patch_No FROM info ORDER BY Patch_No DESC");
$patches->execute();
$patches->bind_result($patchNum);

$episodes=array();

while($patches->fetch_assoc()){            
      //build 1d array
      $data=array($patchNum, substr($patch,0,1));
      //push 1d array to array of arrays (2d array)
      $episodes[]=$data;
      echo '<a href="../index.php?Patch_No='.$patchNum.'" 
               class="patches"
            >'.$patch.'</a><br/>';
}