So I have this associative array (dump done with kint)
d
Instead of having the key "Conference" repeating 3 times. I want to have it just once and sum the 3 values into one in order to have something like:
Conference : 4534
And same thing for all other keys that are repeating..
Is there a native function that can do that ?
You can try
$data = array(
0 => array(
'event' => 'Conference',
'budget' => 3700,
),
1 => array(
'event' => 'Conference',
'budget' => 500,
),
2 => array(
'event' => 'Showroom',
'budget' => 1000,
),
3 => array(
'event' => 'Mission Chez client',
'budget' => 2000,
),
4 => array(
'event' => 'Séminaire',
'budget' => 700,
),
5 => array(
'event' => 'Livraison',
'budget' => 4000,
),
6 => array(
'event' => 'Conference',
'budget' => 334,
),
);
$sum = array_reduce($data, function ($a, $b) {
isset($a[$b['event']]) ? $a[$b['event']]['budget'] += $b['budget'] : $a[$b['event']] = $b;
return $a;
});
print_r(array_values($sum));
Output
Array
(
[0] => Array
(
[event] => Conference
[budget] => 4534
)
[1] => Array
(
[event] => Showroom
[budget] => 1000
)
[2] => Array
(
[event] => Mission Chez client
[budget] => 2000
)
[3] => Array
(
[event] => Séminaire
[budget] => 700
)
[4] => Array
(
[event] => Livraison
[budget] => 4000
)
)
A simple suggestion:
$results = array();
foreach ($budgetByEventTemp as $value)
{
if( ! isset($results[$value['event']]) )
{
$results[$value['event']] = 0;
}
$results[$value['event']] += $value['budget'];
}
var_dump($results);
Update according to comments
You can run over them again:
foreach($results as $key => $value)
{
$structured_results[] = array('event' => $key, 'budget' => $value);
}
var_dump($structured_results);
$sumArray = array();
foreach ($myArray as $k=>$subArray) {
foreach ($subArray as $id=>$value) {
$sumArray[$id]+=$value;
}
}
print_r($sumArray);
This option will group and sum values of all repeated indexes in an array.
Code here :
$aValues[]=array("nametogroup",10);
$aValues[]=array("nametogroup",20);
$aValues[]=array("nametogroup2",30);
$aValues[]=array("nametogroup2",20);
echo var_dump($aValues); // array before grouping
foreach ($aValues as $id=>$value)
{
$a2sum["{$value[0]}"]=$value[1] + $a2sum["{$value[0]}"];
}
echo var_dump($a2sum); //array after group and adding values
This will result into:
array
0 =>
array
0 => string nametogroup (length=11)
1 => int 10
1 =>
array
0 => string nametogroup (length=11)
1 => int 20
2 =>
array
0 => string nametogroup2 (length=12)
1 => int 30
3 =>
array
0 => string nametogroup2 (length=12)
1 => int 20
array
nametogroup => int 30
nametogroup2 => int 50
To iterate a set of data and return a potentially smaller set of data, array_reduce() is a wise "functional" choice. Here is a slight variation on @Baba's answer using a null coalescing operator and a more intuitive variable naming convention.
Code: (Demo)
var_export(
array_reduce(
$data,
function ($carry, $row) {
$carry[$row['event']] = ($carry[$row['event']] ?? 0) + $row['budget'];
return $carry;
}
)
);
