How can I re-organize php array of sports - php

Question

I'm trying to list sport league offerings for intramurals. My current php foreach spits out all the leagues and offerings. Great.
Now I want to only show 1 instance of the sport (course), like "Basketball" and then list the multiple league offerings (offering) in columns.
I can't do another loop based on
if $nt['course'] == "Basketball" because these will change
Not sure if my mssql query needs to change or if I can use another foreach loop?
query
$sql2 = SELECT category
,course
,offering
,Semester
,spots
,registerLink from dbtable WHERE semester like "%Fall 2016%" and category like "%Leagues%" ORDER BY course
$rs= mssql_query ($sql2, $con)
or die("Error!");
$result = array();
if (mssql_num_rows($rs)) {
while ($row = mssql_fetch_assoc($rs)) {
$result[] = $row;
}
}
return $result;
exit();
my foreach loop in view:
<?php
foreach ($data as $nt) {
echo "<div class='col-md-2'>";
echo "<h2><a href='#'>".$nt['course']."</a></h2>";
echo "<h3>".$nt['offering']."</h3>";
echo "<h4>".$nt['Semester']."</h4>";
echo "<p>".$nt['spots']."</p>";
echo "<button>".$nt['registerLink']."</button>";
echo "</div>";
}
So just to clarify:
category = "Leagues" which is in my query
course = Basketball and Flag Football, etc

Answer 1

It's very simple:-
instead of
$result[] = $row;
do
$result[ $row['course']][] = $row;

Answer 2

Simple solution:
$result = array();
if (mssql_num_rows($rs)) {
while ($row = mssql_fetch_assoc($rs)) {
if(!in_array($row["course"], $result))
{
array_push($result, $row["course"]);
}
array_push($result[$row["course"]], $row);
}
}
return $result;
And loop in view:
foreach($data as $key => $value)
{
echo "<h1>".$key."</h1>";
foreach($value as $nt)
{
echo "<div class='col-md-2'>";
echo "<h3>".$nt['offering']."</h3>";
echo "<h4>".$nt['Semester']."</h4>";
echo "<p>".$nt['spots']."</p>";
echo "<button>".$nt['registerLink']."</button>";
echo "</div>";
}
}