Foreach loop full execution and stop the rest of the script - php

Question

I have a product table from where I am checking that quantity for respective product id(s) is valid or not..
this is the code snippet :
$pids = explode(',',$pid); /*in the form of 2,3,4.....*/ /*$pid->product_id*/
$q = explode(',',$q_total); /*in the form of 2,3,4.....*/ /*$q->quantity*/
/*checking start*/
foreach($pids as $index => $ps){
$quants = $q[$index];
$sql = $stsp->query("SELECT quantity FROM product WHERE id='$ps'");
$row = $sql->fetch(PDO::FETCH_ASSOC);
$quantity_rem = $row['quantity'];
if($quants > $quantity_rem){
$array = array();
$array['errquant'] = 'wrong_quant';
$array['error_pr'] = $ps;
echo json_encode($array);
exit; /*stop the rest of the code from executing*/
}
}
/*rest of the code outside the loop*/
So here what is happening is it checks the quantity ($quantity_rem) from table of a product id and if that quantity is less than the quantity given ($q), then the script stops and echo the product id..
But I have more that 1 product .. It's not checking the rest since whenever there is a fault it stops and echo out. I want to check all the products and echo out the product id(s) and stop the rest of the script outside the loop..
Help needed!
Thanks.
and please don't talk to me about sql injection because i know it is vulnerable and i will take care of that..

Answer 1

Try this:
$pids = explode(',',$pid); /*in the form of 2,3,4.....*/ /*$pid->product_id*/
$q = explode(',',$q_total); /*in the form of 2,3,4.....*/ /*$q->quantity*/
/*checking start*/
$errors = array();
foreach($pids as $index => $ps){
$quants = $q[$index];
$sql = $stsp->query("SELECT quantity FROM product WHERE id='$ps'");
$row = $sql->fetch(PDO::FETCH_ASSOC);
$quantity_rem = $row['quantity'];
if($quants > $quantity_rem){
$array = array();
$array['errquant'] = 'wrong_quant';
$array['error_pr'] = $ps;
$errors[] = $array;
}
}
echo json_encode($errors);

Answer 2

foreach($pids as $index => $ps){
$quants = $q[$index];
$sql = $stsp->query("SELECT quantity FROM product WHERE id='$ps'");
$row = $sql->fetch(PDO::FETCH_ASSOC);
$quantity_rem = $row['quantity'];
$array = array();
if($quants > $quantity_rem){
$array[$ps]['errquant'] = 'wrong_quant';
// note little change - you will get array with product ids as key
//and qty error assigned to them
}
echo json_encode($array);
exit; /*stop the rest of the code from executing*/