array(2) {
  [0]=>
  string(10) "product_id"
  [1]=>
  string(4) "5338"
}
int(111)
array(1) {
  [0]=>
  string(15) "product_id=5338"
}
array(1) {
  [0]=>
  string(15) "product_id=5338"
}