PHP : Concatenate arrays with condition - php

Question

I'm trying to read a session variable, create arrays and concatenate them :
Session variable sample:
Array
(
[0] => Array
(
[idArticle] => 224
[ntypeArticle] => 1
)
[1] => Array
(
[idArticle] => 556
[ntypeArticle] => 2
)
[2] => Array
(
[idArticle] => 312
[ntypeArticle] => 1
)
)
I need to read this arrays one by one and create arrays by "ntypeArticle".
If ntypeArticle=1, create array1
If ntypeArticle=2, create array2
My code :
$type1 = array();
$type2= array();
$typeAll = array();
foreach($_SESSION['cart'] as $item)
{
if ($item['ntypeArticle'] == 1) {
$type1= array ( "Type" => '1', );
} else {
$type2= array ( "Type" => '2', );
}
array_push($typeAll , $type1 , $type2);
}
But this creates empty arrays.
Wanted output :
Array
(
[0] => Array
(
[type] => 1
)
[1] => Array
(
[type] => 2
)
[2] => Array
(
[type] => 1
)
)

Answer 1

All you need is this simple thing:
$out = [];
foreach($_SESSION['cart'] as $k => $item)
{
$out[$k] = ['Type' => $item['ntypeArticle']];
}
Now if you output $out variable you get what you need.

Answer 2

Try This
$newOp1 = array()
$newOp2 = array()
foreach($_SESSION['cart'] as $item){
if($item["ntypeArticle"] == 1){
$newOp1[]['type'] = $item["ntypeArticle"]
}else{
$newOp2[]['type'] = $item["ntypeArticle"]
}
}
print_r($newOp1);
print_r($newOp2);

Answer 3

Basing on information you provided, all you want to do is to extract nTypeArticle as type element. That's all.
//array from your example
$inputArray = array(
array(
'idArticle' => 224,
'nTypeArticle' => 1
),
array(
'idArticle' => 556,
'nTypeArticle' => 2
),
array(
'idArticle' => 312,
'nTypeArticle' => 1
),
);
$outputArray = array_map(function($inputElement) {
return array('type' => $inputElement['nTypeArticle']);
}, $inputArray);
var_dump($outputArray);
//Output (the same as yours):
//array (size=3)
// 0 =>
// array (size=1)
// 'type' => int 1
// 1 =>
// array (size=1)
// 'type' => int 2
// 2 =>
// array (size=1)
// 'type' => int 1

Answer 4

$output = new array();
$input = array(
array(
"idArticle" => 224,
"nTypeArticle" => 1
),
array(
"idArticle" => 556,
"nTypeArticle" => 2
),
array(
"idArticle" => 312,
"nTypeArticle" => 1
)
);
foreach($input as $article) {
array_push($output, new array("type"=>$article["nTypeArticle"]));
}
print_r($output);
This gives you the thing you asked for.
(Code has been not tested)