Question

I have two arrays

$brands = Array (1=>a, 2=>b);
$titles = Array (1=>d, 2=>e);

that I want to convert to one two-dimensional array

$both = Array ( [0] => Array ( [brand] => a, [title] => d ) [1] => Array ( [brand] => b, [title] = d ) );

I can do this using a pair of for loops, each of the form

$key_brand = 0;

foreach ($brands as $brand) {
    $both[$key_brand++]['brand'] = $brand;
}

but this seems clumsy, especially if I want to merge lots of arrays like this. I don’t see any standard php function that does what I want. Is there a better way to do it?

Answer 1

I would start with putting all input information in an array so you know what to loop:

$old = array(
 'brands' => Array (1=>a, 2=>b),
 'titles' => Array (1=>d, 2=>e)
 // etc
);

And then do a double loop:

$new = array();
foreach($old as $key => $value) 
{
  foreach ($value as $num_key => $content)
  {
    $new[$num_key][$key] = $content;
  }
}

An additional advantage is that you preserve your original array keys.