Php 如何迭代复杂的关联数组？

我正在使用以下数组

Array
(
[device_id] => 432552343242
[host_name] => computer
[serial_number] => 32525243
[manufacturer] => HP
[model] => ProLiant BL460c Gen9
[locations] => Array
    (
        [0] => Array
            (
                [name] => New York
            )

    )

[cpu_count] => 1
[core_count] => 6
[is_virtual] => 
[operating_system] => Array
    (
        [version] => 6.6 Santiago
        [product] => Array
            (
                [vendor] => Varied
                [description] => ProductAdapter for handling various Unix or 
Linux based Operating Systems (HP-UX, AIX, Solaris, Ubuntu, etc...)
                [name] => Unix Operating Systems
            )

        [name] => Linux Server
    )

[users] => mydomain.com/users
[applications] => mydomain.com/applications
[qualified_name] => Array
    (
        [0] => Array
            (
                [name_type] => UnixName
                [name] => cbc.com
            )

        [1] => Array
            (
                [name_type] => DNSFQDN
                [name] => abc.com
            )

        [2] => Array
            (
                [name_type] => DNSDomain
                [name] => bbc.com
            )

        [3] => Array
            (
                [name_type] => OriginalHostname
                [name] => cnn.com
            )

    )
)

当我尝试循环遍历数组以将其插入数据库时，我得到13个条目

这是我的密码

$array = json_decode($result, true);
foreach($array as $key=>$value) {
$hostname = $array['locations'];

$stmt = $mysqli->prepare("INSERT INTO test (Hostname) VALUES (?)");
$stmt->bind_param("s", $hostname);
$stmt->execute();
$stmt->close();
}

---

我知道为什么要增加13支队伍。它循环遍历数组中的每个索引，并插入每个索引的主机名。我怎样才能让它插入一个呢？我必须创建for语句吗？还是一个foreach中的foreach？如果有任何帮助，我们将不胜感激？这里是新手。

您在最大数组中循环的次数与索引的次数相同，但是您没有使用

$key

和

$value

。你的代码正是按照你对他说的做的：

• 对于每个值->so 13循环
  • 获取

    $array['location']

    值
  • 将其插入数据库
• 结束你的旅程

如果您只想插入

$array['locations']

，为什么要使用

foreach

？ 您只插入了一个值，并且您知道它是索引，所以您实际上不需要使用

foreach

使用

foreach

可以执行以下操作： 但是没有真正的必要

我更愿意这样写： [编辑] 如果要循环插入数组的不同元素，应使用

$key

和

$value

变量

$array = json_decode($result, true);
foreach($array as $key=>$value) {
    if ($key === "location")
    {
        $hostname = $value; //contains $array['location']

        $stmt = $mysqli->prepare("INSERT INTO test (Hostname) VALUES (?)");
        $stmt->bind_param("s", $hostname);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === '...')
    {
        //etc
    }
}

但如果您确切知道数组中值的键，我会这样做：

$hostname  = $array['location'];
$devide_id = $array['device_id'];

$stmt = $mysqli->prepare("INSERT INTO test (Hostname) VALUES (?)");
$stmt->bind_param("s", $hostname);
$stmt->execute();

$stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
$stmt->bind_param("s", $devide_id);
$stmt->execute();

$stmt->close();

---

天啊。这太明显了。非常感谢。我之所以认为foreach语句是必要的，是因为我以前使用的是大型多维数组。有点像隧道里的景象。再次感谢。

$array = json_decode($result, true);
foreach($array as $key=>$value) {
    if ($key === "location")
    {
        $hostname = $value; //contains $array['location']

        $stmt = $mysqli->prepare("INSERT INTO test (Hostname) VALUES (?)");
        $stmt->bind_param("s", $hostname);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === 'device_id')
    {
        $devide_id= $value; //contains $array['device_id']

        $stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
        $stmt->bind_param("s", $devide_id);
        $stmt->execute();
        $stmt->close();
    } else if ($key === '...')
    {
        //etc
    }
}

$hostname  = $array['location'];
$devide_id = $array['device_id'];

$stmt = $mysqli->prepare("INSERT INTO test (Hostname) VALUES (?)");
$stmt->bind_param("s", $hostname);
$stmt->execute();

$stmt = $mysqli->prepare("INSERT INTO test (DeviceId) VALUES (?)");
$stmt->bind_param("s", $devide_id);
$stmt->execute();

$stmt->close();