matriz suma de valor basado en

Question

misma clave

tengo mis datos de la matriz como se muestra a continuación:

Array ( 
    [0] => Array ([name] => Bank BRI [amount] => 0) 
    [1] => Array ([name] => Bank BRI [amount] => 0) 
    [2] => Array ([name] => Bank BCA [amount] => 1412341234) 
    [3] => Array ([name] => Bank CIMB Niaga [amount] => 532532552) 
    [4] => Array ([name] => Bank BRI [amount] => 34534534) 
    [5] => Array ([name] => Bank CIMB Niaga [amount] => 453425243) 
    [6] => Array ([name] => Bank BRI [amount] => 0) 
    [7] => Array ([name] => Bank BNI [amount] => 124124) 
    [8] => Array ([name] => Bank CIMB Niaga [amount] => 352345623) 
    [9] => Array ([name] => Bank BCA [amount] => 23432423) 
    [10] => Array ([name] => Bank Mandiri [amount] => 0) 
    [11] => Array ([name] => Bank BCA [amount] => 0) 
    [12] => Array ([name] => Bank BCA [amount] => 0) 
    [13] => Array ([name] => Bank Permata [amount] => 352352353) 
) 

Cómo sumar 'cantidad' basado en mismo nombre del banco.

Mis datos deben mostrado así:

Bank BRI........... with '*total amount*' 
Bank BCA........... with '*total amount*' 
Bank CIMB NIAGA.... with '*total amount*' 
Bank BNI........... with '*total amount*' 
Bank Mandiri....... with '*total amount*' 
Bank Permata....... with '*total amount*' 

Answer 1

<?php 

// array of bank structure 
$banks = array(); 
$banks[] = array('name'=>'Bank BRI','amount'=>rand()); 
$banks[] = array('name'=>'Bank BRI','amount'=>rand()); 
$banks[] = array('name'=>'Bank BCA','amount'=>rand()); 
$banks[] = array('name'=>'Bank CIMB','amount'=>rand()); 
$banks[] = array('name'=>'Bank BRI','amount'=>rand()); 
$banks[] = array('name'=>'Bank CIMB','amount'=>rand()); 
$banks[] = array('name'=>'Bank BRI','amount'=>rand()); 
$banks[] = array('name'=>'Bank BNI','amount'=>rand()); 
$banks[] = array('name'=>'Bank CIMB','amount'=>rand()); 
$banks[] = array('name'=>'Bank BCA','amount'=>rand()); 
$banks[] = array('name'=>'Bank Mandiri','amount'=>rand()); 
$banks[] = array('name'=>'Bank BCA','amount'=>rand()); 
$banks[] = array('name'=>'Bank BCA','amount'=>rand()); 
$banks[] = array('name'=>'Bank Permata','amount'=>rand()); 

// begin the iteration for grouping bank name and calculate the amount 
$amount = array(); 
foreach($banks as $bank) { 
    $index = bank_exists($bank['name'], $amount); 
    if ($index < 0) { 
     $amount[] = $bank; 
    } 
    else { 
     $amount[$index]['amount'] += $bank['amount']; 
    } 
} 
print_r($amount); //display 

// for search if a bank has been added into $amount, returns the key (index) 
function bank_exists($bankname, $array) { 
    $result = -1; 
    for($i=0; $i<sizeof($array); $i++) { 
     if ($array[$i]['name'] == $bankname) { 
      $result = $i; 
      break; 
     } 
    } 
    return $result; 
} 

Answer 2

Ejemplo en C#:

Dictionary<string,object>[] items = { 
    new Dictionary<string, object> {{ "name", "Bank BRI"}, {"amount", 0 }}, 
    new Dictionary<string, object> {{ "name", "Bank BRI"}, {"amount", 0 }}, 
    new Dictionary<string, object> {{ "name", "Bank BCA"}, {"amount", 1412341234 }}, 
    new Dictionary<string, object> {{ "name", "Bank CIMB Niaga"}, {"amount", 532532552 }} 
}; 

var amounts = new Dictionary<string, int>(); 

foreach (var item in items) { 
    string bank = (string)item["name"]; 
    int amount = (int)item["amount"]; 
    if (amounts.ContainsKey(bank)) { 
    amounts[bank] += amount; 
    } else { 
    amounts.Add(bank, amount); 
    } 
} 

foreach (var amount in amounts) { 
    Console.WriteLine("{0}: {1}", amount.Key, amount.Value); 
} 

Answer 3

$a = arrayofindonesianbanks; 

foreach ($a as $anarrays) { 
     echo "$anarrays[name]." ".$anarrays[amount]"; 
    } 
} 

ver foreach en php.

Answer 4

Por lo tanto, primero necesita $amountsArray para obtener los valores que enumeró, de alguna manera. Entonces:

$bankTotals = array(); 
foreach($amountsArray as $amount) 
{ 
    $bankTotals[$amount['name']] += $amount['amount']; 
} 

Después de esto, $bankTotals es una matriz indexada en el nombre del banco, con el valor de la cantidad total para el banco. Puedes usar esta matriz como mejor te parezca desde aquí.

Una cosa que podría ser útil es otro bucle foreach imprimirlo todo lo alto:

foreach($bankTotals as $name => $amount) 
{ 
    echo $name.".....".$amount."\n"; 
} 

Answer 5

yo preferiría añadir

$bankTotals = array(); 
foreach($amountsArray as $amount) 
{ 
if(isset($bankTotals[$amount['name']])) 
    $bankTotals[$amount['name']] += $amount['amount']; 
else 
    $bankTotals[$amount['name']] = $amount['amount']; 
}