Remove first element from each row and use its value as the new first level key

Question

Is there a clean way to arrange this array so that the key becomes id? I have done this several times using a couple foreach and a new array where I put the info, but I am using around 7 lines of code and was wondering if there is anything cleaner. The array in question is:

Array ( 
  [0] => Array ( [log_id] => 6  [type] => Test   [other_info] => MoreInfo ) 
  [1] => Array ( [log_id] => 5  [type] => Test2  [other_info] => MoreInfo2 ) 
)

So what I want to obtain from the above array is:

Array ( 
  [6] => Array ( [type] => Test   [other_info] => MoreInfo ) 
  [5] => Array ( [type] => Test2  [other_info] => MoreInfo2 ) 
)

You can see that I put log id as the key now. This is taking me several lines of code... Do you have an idea of how this can be achieved in 3 or 4 lines at most?

Alternatively, is there a cleaner way to access the row containing the *log_id* that I want? The use that I want to give to this is that I can access the row of a certain *log_id*... In this case I would do it with $array[$log_id]... But if there is a solution to do this without altering the array (and with only 1 line) I will accept that as an answer too!

Thanks!

Answer 1

But why do you need multiple foreach statements? Wouldn't this answer your question:

$new_arr = array();
foreach ($old_arr as $row) {
    $new_arr[$row['log_id']][] = $row;
}

The only difference is that the new rows will still have the log_id key, but I doubt that's going to bother you. Except that, I find it very clear.