Populate a 2d array with repeated values according to the first and second column values of a 2d array

There is the following array:

$arr1 = array(array('xxx', 3), array('yyy', 2));

I need to transform it into the array $arr2, where the number of occurrence of each entry is equal to the 2nd column value in array $arr1. For instance, for the above given $arr1, $arr2 should be the following:

$arr2 = array(
    array('xxx'),
    array('xxx'),
    array('xxx'),
    array('yyy'),
    array('yyy')
);

I wrote the following code, but my question is: Is it possible to do the same in a simpler way?

for ($i=0; $i<count($arr1); $i++) {
  for ($j=0; $j<$arr1[i][1]; $j++) {
     $arr2[] = array($arr1[0]);
  }
}

I think a foreach is simpler and easier to read.

$arr1 = array(array('xxx', 3), array('yyy', 2));
$arr2 = array();

foreach ($arr1 as $arr)
{
    for ($i = 0; $i < $arr[1]; $i++)
    {
        $arr2[] = array($arr[0]);
    }
}