sorting an array of hashes??

[dr4296]

Greetings All!

I have an array of hashes that is constructed like this:

$record= array( 'cat_number' => $category_number,
'row'=> $good_row_num,
'title_link' => $item_title,
'hit_number' => $hit_number
);

So, I have a bunch of these $record records and I'd like to sort the entire array by the value for the 'hit_number' hash.

Any idea how to do it?

Thanks!

-= Dave =-

[[deleted]]

foreach ($records as $record) {
$sortarray[] = $record['hit_number'];
}
array_multisort($records, $sortarray);

should do it...

[dr4296]

Originally posted by mattwade
foreach ($records as $record) {
$sortarray[] = $record['hit_number'];
}
array_multisort($records, $sortarray);


should do it...

Dear mattwade,

I'm trying what you recommended and having a little trouble. Note that I'm actually keeping each $record in an array called $list (via a $list[]=$record line at the end of a loop).

Now, here's what I'm trying. Note the slight variation... I'm using a "while" statement, just because it's what I was already trying to do, plus I can verify what's happening with my already-written echo command.

reset ($list);
while (list($key, $value)= each ($list)){
echo "key=$key value=$value<BR>";
$sortarray[] = $value['hit_number'];
}
array_multisort($list, $sortarray);

echo "<BR></BR>SORTED !!<BR></BR>";

reset($list);
while (list($key, $value)= each($list)){

    $this_cat_num= $list[$key]['cat_number'];
    $this_good_row_number = $list[$key]['row'];
    $this_title_link = $list[$key]['title_link'];
    $this_hit_number= $list[$key]['hit_number'];

echo "cat_num=$this_cat_num  cat_name=$this_cat_name  title_link=$this_title_link  hit_number= $this_hit_number<BR>";

}

The second loop through the array shows the exact same sort order as before.

So, $sort_array is going to be an array of numbers in any old order, with some probably repeating, right?

(example: 0,1,13,24,1,0,0,3,0 )

I've never used the array_multisort command. That's going to sort my entire array of records according to this set of numbers?

Thanks!

-= Dave =-

[dr4296]

mattwade,

I figured it out.

Just had to switch the $list and the $sort_array around in that one line:

array_multisort($sortarray, $list, SORT_NUMERIC, SORT_ASC);

Thanks!!

-= Dave =-

[[deleted]]

Yep..sorry about that. Was just about to post the same thing..