Question

In PHP I have an array that looks like this:

$array[0]['width'] = '100';
$array[0]['height'] = '200';
$array[2]['width'] = '150';
$array[2]['height'] = '250';

• I don’t know how many items there are in the array.
• Some items can be deleted which explains the missing [1] key.

I want to add a new item after this, like this:

$array[]['width'] = '300';
$array[]['height'] = '500';

However the code above don’t work, because it adds a new key for each row. It should be the same for the two rows above. A clever way to solve it?

An alternative solution would be to find the last key. I failed trying the ‘end’ function.

Answer 1

If you don’t mind it losing those keys, you could easily fix the problem by re-indexing.

$array = array_values($array);
$i = count($array);
$array[$i]['width'] = '300';
$array[$i]['height'] = '500';

However, if you don’t want to do this, you could also use this:

$array[] = array(
    'width' => '300',
    'height' => '500'
);

Which will create a new array and inserts it as a second dimension.