How to get array values from view (Codeigniter) - php

Question

i would like to ask for your help to solve my problem. Your help is kindly appreciated.
My question is i have two inputs type which are array ( <input type='text' name='cost[]'> and <input type='text' name='price[]'> ) in view. Both inputs type are within a foreach statement. Let's say foreach from a table of database that has 3 records. So, from the view of web browser it requires user to input 3 times on the cost and price fields for every record. In my controller, i want to compare user input as below
-price[1] cannot be more than cost[1]
-price[2] cannot be more than cost[2]
-price[3] cannot be more than cost[3]
by using if else statement. How am i going to code in my controller so that price[1] is only compared to cost[1], price[2] is only compared to cost[2] and price[3] is only compared to cost[3].Below is my code in my controller, but cannot work.
$cost = $this->input->post('cost');
$price = $this->input->post('price');
if ($price > $cost)
{
echo "Rejected";
}
else
{
echo "Accepted";
}

Answer 1

You will need to loop over all the values.
My Codeigniter is a little rusty but I believe $cost and $price should both be arrays. Some something simple like this;
foreach ($price as $key => $value) {
if ($value > $cost[$key] ) {
echo "Rejected";
} else {
echo "Accepted";
}
}
If you want all to be valid then you could just break on the first rejected value. Otherwise you loop through all and warn the user about the invalid ones?

Answer 2

Please try the code below.
For demo: Demo URL
<?php
//$cost = $this->input->post('cost');
//$price = $this->input->post('price');
//Suppose I have added dummy values in these variable as you received from view.
$cost = array(1,2,3);
$price = array(3,4,1);
//as you mentioned each one cost have price like $cost zero index compared with $price zero index.
$i = 0;
foreach($cost as $cos){
if ($price[$i] > $cos)
{
echo "Rejected";
}
else
{
echo "Accepted";
}
$i++;
}
?>