在单个字符串中打印PHP数组值

Question

I have an array which I load as follows:

foreach ($_SESSION['cart'] as $item) 
{
  $pid = $item['itemId'];
  $q = $item['qty']; 
  $orderedItems[]=array('itemId'=>$pid,'qty'=>$q);
}

I now need to create a variable that will store the results of my array in a string just like this:

"For itemA ==> 2 sample
For itemB ==> 1 sample"

Answer 1

$string = join("
", array_map(function($x) {return "For $x[itemId] ==> $x[qty] sample";}, $orderedItems));