element of array as function to see other elements? - php

Question

I don't speak very good English, not sure about title so will try to explain what i need to do:
I am making log parser.
I have 3 dynamic arrays (read from .log file) containing corresponding elements:
$personName //array of strings, can contain same name
$itemName //array of strings, can contain same name
$itemAmount //array of numbers
Sample arrays:
$personName = array("Adam", "Maria", "Adam", "Adam");
$itemName = array("paper", "paper", "pen", "paper");
$itemAmount = array(11, 25, 2, 64);
I would like to sort (by person and item) and count (by amount) those arrays, eg. to print:
Total there are '100' 'paper' and '2' 'pen'.
'Adam' have '75' 'paper' and '2 'pen'.
'Maria' have '25' 'paper'.
This would allow me to get % of each item each person have, eg.:
'Adam' have '75'% of all 'paper' and '100'% of all 'pen'.
'Maria' have '25'% of all 'paper'.
I have arrays with unique names:
$persons = array_keys (array_flip ($personName));
$items = array_keys (array_flip ($itemName));
I did tried different combinations of for loops with foreach, but I struggle to find any solution.
Can somebody help me to get right approach?
(sorry if this is too basic, i really tried to look for solution and I'am very new to programming, started learning 3 days ago with this project)
Thanks!

Answer 1

Like this:
<?php
$personName = array("Adam", "Maria", "Adam", "Adam", "Mihai");
$itemName = array("paper", "paper", "pen", "paper", 'pencil');
$itemAmount = array(11, 25, 2, 64, '18');
$items = array();
$persons = array();
foreach($itemName as $id => $name){
$items[$name] += $itemAmount[$id]; // we are adding amount for each item to $items array
$persons[$personName[$id]][$name] += $itemAmount[$id]; // we are adding every item with amount to each persons
}
echo "Total there are "; // we are looping in each $items to display totals
$i = 0;
foreach($items as $nr => $item){
echo "'".$item."' '".$nr."'";
if($i < count($items)-2){ // this is for 'and' or ',' in case of multiple items
echo ", ";
} elseif($i < count($items)-1){
echo " and ";
}
$i++;
}
echo '<br />';
foreach($persons as $one => $value ){ // we are looping in each persons to display what they have
echo "'".$one."' have ";
$i = 0;
foreach($value as $val => $number){
echo "'".$number."' '".$val."'";
if($i < count($value)-2){ // this is for 'and' or ',' in case of multiple items
echo ", ";
} elseif($i < count($value)-1){
echo " and ";
}
$i++;
}
echo '.<br />';
}
// print_r($items); // will result in all items
// print_r($persons); // will result in every person with every item
?>
Now you can manage %.