PHP：条件に基づいてJSON配列から要素を削除する

Question

1つのJSON配列があります。 dispatch_quantity = 0の要素を削除します。

[{ 
"order_no": "ORDER123", 
"dispatch_quantity": "500", 
"balance_quantity": "500" 
}, { 
"order_no": "ORDER123", 
"dispatch_quantity": "0", 
"balance_quantity": "500"}] 

だから操作の後、出力は次のようになります。

[{ 
"order_no": "ORDER123", 
"dispatch_quantity": "500", 
"balance_quantity": "500", 
}]  

私はこれを試してみました：

foreach ($data as $json_array) { 
    $dispatch_quantity = $json_array['dispatch_quantity']; 
    if ($dispatch_quantity == 0) { 
    unset($json_array[$i]); 
    } 
}  

Answer 1

$json ='[{ 
    "order_no": "ORDER123", 
    "dispatch_quantity": "500", 
    "balance_quantity": "500" 
}, { 
    "order_no": "ORDER123", 
    "dispatch_quantity": "0", 
    "balance_quantity": "500" 
}]'; 

$orders = json_decode($json); 
$filteredOrders = $orders; 
foreach ($filteredOrders as $key => $order) 
{ 
    if ($order->dispatch_quantity == 0) 
    { 
     unset($filteredOrders[$key]); 
    } 
}