[PHP] sorting an array

[Steve Buehler]

I am having problems sorting a multi-dimensional array.  I am hoping that 
somebody can help me figure out what I am doing wrong.  It should sort on 
the "field" than on the "fac".  Here is my code:
-----start code-----
$sortterm;
get_locations();

function cmp ($a, $b) {
GLOBAL $sortterm;
    return strcmp($a[$sortterm], $b[$sortterm]);
}
function get_locations(){
GLOBAL $sortterm;
$i="1";
        while(($row=mysql_fetch_object($result))){
                $locs[$i][loc_id]=$row->loc_id;
                $locs[$i][fac]=$row->fac;
                $locs[$i++][field]=$row->field;
        }
	reset($locs);
	$sortterm="field";
	usort($locs, "cmp");
	reset($locs);
	$sortterm="fac";
	usort($locs, "cmp");
	reset($locs);
	while (list ($key, $value) = each ($locs)) {
		echo $locs[$key][loc_id].", ".$locs[$key][fac].", 
".$locs[$key][field]."<br>\n";
	}
}
-----end code-----

Here is how it comes out when run:
12, Johnson County Community College, C
11, Johnson County Community College, B
13, Johnson County Community College, D
14, Johnson County Community College, E
10, Johnson County Community College, A
8, Johnson County Girls Athletic Assoc, D
6, Johnson County Girls Athletic Assoc, B
7, Johnson County Girls Athletic Assoc, C
5, Johnson County Girls Athletic Assoc, A
9, Shawnee Civic Center, 1
1, Tomahawk Sports Dome, 1
2, Tomahawk Sports Dome, 2
3, Tomahawk Sports Dome, 3
4, Tomahawk Sports Dome, 4
As you can see, the fac is sorted correctly, but the field isn't.

Thanks
Steve


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