Question

如何通过PHP多维数组通过键获取价值

我们在foreach循环中获取TradeID

我们逐一循环获取TradeID

stdClass Object
    (
        [0] => 
        [1] => 1
        [2] => Array
            (
                [0] => Array
                    (
                        [TradeID] => 15950315
                        [Price] => 0.00000170
                        [Type] => buy
                        [Amount] => 712.85989430
                        [Total] => 0.00121368
                        [Time] => 1535337908
                    )

                [1] => Array
                    (
                        [TradeID] => 15908375
                        [Price] => 0.00000300
                        [Type] => buy
                        [Amount] => 574.71264368
                        [Total] => 0.00172673
                        [Time] => 1535022882
                    )
            )
    )

Answer 1

您需要两次使用foreach。

PHP代码：

/* Generating structure */
$rawdata = array(
        '',
        1,
        array(
            array(
                'TradeID' => 15950315,
                'Price' => 0.00000170,
                'Type' => 'buy',
                'Amount' => 712.85989430,
                'Total' => 0.00121368,
                'Time' => 1535337908,
            ),
            array(
                'TradeID' => 15908375,
                'Price' => 0.00000300,
                'Type' => 'buy',
                'Amount' => 574.71264368,
                'Total' => 0.00172673,
                'Time' => 1535022882,
            )
        )
    );
$data = (object)$rawdata;
print_r($data);// same output as shown in the question


/** Getting TradeID */

foreach ($data as $key => $value) {
    if (is_array($value)) {
        foreach ($value as $tradeKey => $tradevalue) {
            echo $tradevalue['TradeID'].'<br/>';
        }
    }
}

请在以下位置检查输出：https://3v4l.org/d3KbN

Answer 2

考虑到$object变量将是您看到的对象，并且只有第一层是一个对象，您可以使用符号(array)强制转换为数组，并继续您可能已经知道的逻辑：

$array = (array) $object;

foreach ($array['2'] as $item) {
    echo $item['TradeID'];
}

很抱歉，上一个答案已在此处修复并测试：https://3v4l.org/LOYtp

如何通过多维数据集的键从对象属性中获取键的值作为PHP中的数字

2 个答案: