Question

I have the following array (via var_dump) $results:

array(4) { 
    [0]=> array(5) { 
        [0]=> array(1) { ["evtId"]=> string(1) "2" } 
        [1]=> array(1) { ["evtId"]=> string(1) "3" } 
        [2]=> array(1) { ["evtId"]=> string(1) "4" } 
        [3]=> array(1) { ["evtId"]=> string(1) "5" } 
        [4]=> array(1) { ["evtId"]=> string(1) "6" } 
    [1]=> array(5) { 
        [0]=> array(1) { ["evtLocation"]=> string(2) "11 St Paul" } 
        [1]=> array(1) { ["evtLocation"]=> string(5) "12412 Horace St" } 
        [2]=> array(1) { ["evtLocation"]=> string(14) "Friends Center" } 
        [3]=> array(1) { ["evtLocation"]=> string(14) "Friends Center" } 
        [4]=> array(1) { ["evtLocation"]=> string(14) "Friends Center" } 
    [2]=> array(5) { 
        [0]=> array(1) { ["evtDate"]=> string(1) "11/12/2011" } 
        [1]=> array(1) { ["evtDate"]=> string(1) "06/05/2012" } 
        [2]=> array(1) { ["evtDate"]=> string(1) "10/10/2010" } 
        [3]=> array(1) { ["evtDate"]=> string(1) "06/06/2012" } 
        [4]=> array(1) { ["evtDate"]=> string(1) "10/12/2012" } 
    [3]=> array(5) { 
        [0]=> array(1) { ["evtType"]=> string(4) "Fun" } 
        [1]=> array(1) { ["evtType"]=> string(6) "Random" } 
        [2]=> array(1) { ["evtType"]=> string(9) "Childcare" } 
        [3]=> array(1) { ["evtType"]=> string(9) "Childcare" } 
        [4]=> array(1) { ["evtType"]=> string(9) "Childcare" } 

I’m using this array to pull database information into a function that builds a table. However, I need this to end up in the following format:

$rows[] = array('2', '11 St Paul', '11/12/2011', 'Fun'); 

I’ve really only been able to get this far:

foreach ($events as $field_arr) {
  //this gives me 4 arrays, each array containing all of the records for one field type.
}

Now I need to loop through each of the four arrays, take one value from the same index and add it to the $rows[] array, which I can pass to the table building function. I’ve tried variations of the following (inside the initial foreach loop)

 $x = count($result[0]); //this gives the number of fields
 for ($i = 0; $i < $x; $i++) {
    rows[$i] = $field_array[$i];
 }

I’ve been trying variations for half the day, with little luck (I’m ending up with arrays containing 4 times as many elements as I need, and having a hard time getting rid of the final array keys (['evtType'] etc).
If anyone can help point me in the right direction I’d greatly appreciate it.

Answer 1

Most code posted here seems quite verbose, so here’s a short version:

$rows = array();
foreach ($results as $pairs)
{
    foreach ($pairs as $rowNumber => $pair)
    {
        // current($pair) will give you the value
        // you could use key($pair) to get the key too
        $rows[$rowNumber][] = current($pair);
    }
}

That’s pretty much it. Each element of $results holds a list of key=>value pairs and we’re only interested in the value of each pair. The index of the pair is the index of the row, which we store in $rowNumber. I’ve run it and it seems to produce the expected results.