Merge array inside array

Question

I have 2 arrays to merge. The first array is multidimensional, and the second array is a single array:

$a = array(
    array('id'=>'1', 'name'=>'Mike'),
    array('id'=>'2', 'name'=>'Lina'),
);

$b = array('id'=>'3', 'name'=>'Niken');

How to merge 2 arrays to have same array depth?

Answer 1

If what you want is this:

array(
    array('id'=>'1', 'name'=>'Mike'),
    array('id'=>'2', 'name'=>'Lina'),
    array('id'=>'3', 'name'=>'Niken')
)

You can just add the second as a new element to the first:

$one[] = $two;

Answer 2

Just append the second array with an empty dimension operator.

$one = array(
    array('id'=>'1', 'name'=>'Mike'),
    array('id'=>'2', 'name'=>'Lina')
);

$two = array('id'=>'3', 'name'=>'Niken');

$one[] = $two;

But if you're wanting to merge unique items, you'll need to do something like this:

if(false === array_search($two, $one)){
    $one[] = $two;
}