PHP Array Sum By same key value pair needs to Calculated - php

Question

<?php
error_reporting(E_ALL);
$test_array = Array(Array
(
"pid" => 1,
"encounter" => 20,
"code" => abc,
"fee" => 300.00
),
Array
(
"pid" => 1,
"encounter" => 20,
"code" => abc,
"fee" => 300.00
),
Array
(
"pid" => 2,
"encounter" => 20,
"code" => abc,
"fee" => 80
),
Array
(
"pid" => 3,
"encounter" => 20,
"code" => xyz,
"fee" => 90
),
Array
(
"pid" => 5,
"encounter" => 40,
"code" => xyz,
"fee" => 100
),
Array
(
"pid" => 3,
"encounter" => 40,
"code" => xyz,
"fee" => 100
),
Array
(
"pid" => 2,
"encounter" => 20,
"code" => abc,
"fee" => 80
),
Array
(
"pid" => 1,
"encounter" => 20,
"code" => xyz,
"fee" => 40
));
//Declaration...
$pre_pid = "";
$pre_encounter = "";
$pre_code = "";
$pre_fee = "";
$sum_charges = 0;
/*Foreach loop*/
$i=0;
foreach($test_array as $my_arr){
$pre_pid = $my_arr['pid'];
$pre_encounter = $my_arr['encounter'];
$pre_code = $my_arr['code'];
if($pre_pid == $my_arr['pid'] && $pre_encounter == $my_arr['encounter'] && $pre_code == $my_arr['code']){
echo "FEE-AMOUNT=".$my_arr['fee'];
$sum_charges+=$my_arr['fee'];
echo '<br/>';
}
$i++;
}
//Getting Sum = 1090
//Actual Sum I needed = 710
?>
Hello Friends I am trying above code where i want fee should be calculated of those who having same 3 key value pair.
For Example IF each array 3 key values are same then calculate those fee amount only.

Answer 1

if i understood your problem, you need to sum the fee column everytime the 3 other columns have the same value. I customised your code a bit so you can have the total cost for each of your elements.
//Declaration...
$pre_pid = "";
$pre_encounter = "";
$pre_code = "";
$pre_fee = "";
$sum_charges = 0;
$sum_array = array();
$total_fees = 0;
/*Foreach loop*/
foreach($test_array as &$my_arr){
$pre_pid = $my_arr['pid'];
$pre_encounter = $my_arr['encounter'];
$pre_code = $my_arr['code'];
$pre_fee = $my_arr['fee'];
$fee_ammount = $pre_fee;
$duplicates_check = array();
foreach($test_array as $value) {
if($pre_pid == $value['pid'] && ($pre_encounter != $value['encounter'] || $pre_code != $value['code'])){
$duplicate = false;
foreach($duplicates_check as $duplicate_array) {
if($duplicate_array == $value)
$duplicate =true;
}
if(!$duplicate) {
$fee_ammount += $value['fee'];
$duplicates_check[] = $value;
}
}
}
$my_arr['total_fee'] = $fee_ammount;
if(!isset($sum_array[$my_arr['pid']])) {
$sum_array[$my_arr['pid']] = $my_arr['total_fee'];
echo 'pid => '.$my_arr['pid'].', total fees => '.$my_arr['total_fee'].'<br />';
$total_fees += $my_arr['total_fee'];
}
}
echo 'Total : '.$total_fees;
var_dump($sum_array);