Question

我正在创建一个只需要ID和成本的购物车，不需要数量。创建后，我的会话数组看起来像这样

array(
    array('id' => 1, 'price' => 9.99),
    array('id' => 1, 'price' => 0.01)
);

它是这样创建的：

# @param id     This contains the solution ID they're paying for
# @param price  This contains the amount they're paying towards the solution

public function addItemToCart($id, $price) {

    # Ensure the user is logged in and the SID exists in DB for them
    $solution = null;
    if(!($solution = $this->userCanAccess((int) $id)))
        # They cannot access it or do not have permissions
        return array('state' => false, 'reason' => 'No Permission');

    # Ensure they are not paying too much
    $container = new SoluionContainer($solution->getId());

    if($price > (new SolutionController(UserContainer::getCurrentUserController()))->getSolutionById($solution->getId())['cost'] - $container->getPaymentController()->getTotalPayed())
        # They are paying too much
        return array('state' => false, 'reason' => 'Payment is too much');

    /* array_search is not working - need to rethink problem solve */

    # Find the ID in the cart
    $pid         = array_search((int) $id, $_SESSION['cart']);

    # If the ID exists, increase cost
    if (!empty($pid)) {
        $_SESSION['cart'][$pid]['price'] = $_SESSION['cart'][$pid]['price'] + $price;
        return true;
    }

    /* end array_search() problem - not intentially needed to do just easier */

    # If the ID does not exist, add new ID
    $_SESSION['cart'][] = ['id' => $id, 'price' => $price];

    return true;
}

TLDR；多维数组上的array_search()无法正常工作，如果我执行array_search(1, $_SESSION['cart'][0])，它将返回id作为键。

我想要它返回该数组所在的数字索引点，以便我可以附加到价格上，而不是将另一个数组推入多维数组。

所以我想要的预期结果是：

$key = array_search(1, $_SESSION['cart']) # 0
print_r($_SESSION['cart'][$key]) # ['id' => 1, 'price' => 9.99]

任何帮助将不胜感激。

如何在多维数组上使用array_search

0 个答案: