插入數據庫時PHP MySQL錯誤

嘿。當我使用下面的函數：插入數據庫時PHP MySQL錯誤

function ship_order($id, $order_items, $products) 
{ 
    $connection = mysql_open(); 

    foreach ($order_items as $order_item) 
    { 
     foreach ($products as $product) 
     { 
      if ($order_item['product_id'] == $product['id']) 
      { 
       if ($order_item['quantity'] > $product['stock']) 
       { 
        return false; 
       } 
      } 
     } 
    } 

    $query = "update SEOrders " . 
     "set status='Shipped' " . 
     "where id = $id"; 

    $result = mysql_query($query, $connection) or show_error(); 

    foreach ($order_items as $order_item) 
    { 
     foreach ($products as $product) 
     { 
      if ($order_item['product_id'] == $product['id']) 
      { 
       $new_stock = $product['stock'] - $order_item['quantity']; 
       $sold_stock = $product['sold_stock'] + $order_item['quantity']; 

       $query = "update SEProducts " . 
         "set sold_stock= '$sold_stock', stock='$new_stock' " . 
         "where id = $id"; 

       $result = mysql_query($query, $connection) or show_error(); 
      } 
     } 
    } 

    mysql_close($connection) or show_error(); 
    return true; 
}

我偶爾會得到它看起來像這樣的錯誤：

Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 176 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/home/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Notice: Undefined index: product_id in /net/export/home/public_html/wp/SE/includes/defs.php on line 196 Warning: Cannot modify header information - headers already sent by (output started at /net/export/home/public_html/wp/SE/includes/defs.php:196) in /net/export/home/public_html/wp/SE/ship_order_action.php on line 21

但只飄飛。我不知道爲什麼它只發生在有時。

此外，mysql_open（）函數的定義如下：

function mysql_open() 
{ 
    $connection = @ mysql_connect(HOST, USER, PASSWORD) 
     or die("Could not connect"); 
    mysql_select_db(DATABASE, $connection) 
     or show_error(); 
    return $connection; 
}

凡主機，用戶...等，在一個單獨的文件中定義。

傳入的$ id是直接從頁面中進行檢查的。

function get_order_items($id) 
{ 
    $connection = mysql_open(); 
    $query = "select oi.order_id, p.name, oi.quantity, p.stock " . 
      "from SEOrder_items as oi join SEProducts p on oi.product_id = p.id " . 
      "where oi.order_id = $id"; 
    $result = mysql_query($query, $connection) or show_error(); 
    mysql_close($connection) or show_error(); 

    $order_items = array(); 
    while ($order_item = mysql_fetch_array($result)) 
    { 
     $order_items[] = $order_item; 
    } 

    return $order_items; 
}

和$產品通過傳遞：

function get_products() 
{ 
    $connection = mysql_open(); 
    $query = "SELECT * FROM SEProducts"; 
    $query .= " order by name asc"; 
    $result = mysql_query($query, $connection) or show_error(); 

    $products = array(); 
    while ($product = mysql_fetch_array($result)) 
    { 
     $products[] = $product; 
    } 

    mysql_close($connection) or show_error(); 

    return $products; 
}

在情況下，它相關的數據庫看起來是這樣的：

create table if not exists SEOrders 
(
    id int not null auto_increment primary key, 
    name varchar(20) not null, 
    address varchar(30) not null, 
    status varchar(10) not null, 
    dateShipped timestamp 
)ENGINE=INNODB; 

create table if not exists SEProducts 
(
    id int not null auto_increment primary key, 
    price double not null, 
    name varchar(30) not null, 
    stock int not null, 
    original_stock int not null, 
    sold_stock int not null 
)ENGINE=INNODB; 

create table if not exists SEOrder_items 
(
    id int not null auto_increment primary key, 
    order_id int not null, 
    foreign key (order_id) references SEOrders(id), 
    product_id int not null, 
    foreign key (product_id) references SEProducts(id), 
    quantity int not null 
)ENGINE=INNODB;

基本上$ ORDER_ITEMS通過傳遞我試圖做的是從當前股票中減去數量，並將數量加入到賣出的股票中。然而，這不是很有效，每隔一段時間我會得到上述錯誤。但奇怪的是，我會多次調用該函數而沒有任何問題。

由於提前， JheeBz

來源

2011-05-30 JheeBz

只需更換此功能，這可能工作。

function get_order_items($id) 
{ 
    $connection = mysql_open(); 
    $query = "select p.id, oi.order_id, p.name, oi.quantity, p.stock, oi.product_id " . 
      "from SEOrder_items as oi join SEProducts p on oi.product_id = p.id " . 
      "where oi.order_id = $id"; 
    $result = mysql_query($query, $connection) or show_error(); 
    mysql_close($connection) or show_error(); 

    $order_items = array(); 
    while ($order_item = mysql_fetch_array($result)) 
    { 
     $order_items[] = $order_item; 
    } 

    return $order_items; 
}

來源

2011-08-17 06:06:29 dm7

您需要的功能get_order_items內選擇數據庫中的字段product_id。（p.product_id）。

來源

2011-05-30 11:23:51

那麼在那種情況下，我必須做一個連接？我有點吮吸連接。 – JheeBz 2011-05-30 11:43:32

已經有一個連接：'將SEProducts作爲p'加入。只需在SELECT和FROM之間添加'p.product_id'。 – 2011-05-30 11:45:51

謝謝，但可悲的是，這仍然觸發了錯誤。 – JheeBz 2011-05-30 12:06:59

插入數據庫時​​PHP MySQL錯誤

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插入數據庫時PHP MySQL錯誤