array(4) {
[0]=>
array(1) {
["product_id"]=>
string(1) "1"
}
[1]=>
array(1) {
["product_id"]=>
string(1) "3"
}
[2]=>
array(1) {
["product_id"]=>
string(1) "4"
}
[3]=>
array(1) {
["product_id"]=>
string(1) "5"
}
}