PHP 从嵌套数组中提取值并放置在循环中以回显值答案

【问题标题】：PHP Extract value from nested array and place in a loop to echo valuePHP 从嵌套数组中提取值并放置在循环中以回显值
【发布时间】：2014-05-20 17:36:27
【问题描述】：

我正在尝试通过以下 SOAP 请求提取从 vCenter 服务器中提取的虚拟机名称。虽然我得到了结果（请参阅下面的 var_dump），但我不知道如何放入循环来获取名称，因为有许多嵌入式数组，我尝试的所有操作要么返回错误，要么返回 Array.我很欣赏这可能是一个相当简单的问题，但我就是想不通。

这是我试图获取的下面代码摘录中的名称值。

$request->specSet = array (
                               'propSet' => array (
        array ('type' => 'VirtualMachine', 'all' => 0, 'pathSet' => array('name','runtime.powerState', 'config.hardware.numCPU', 'config.hardware.memoryMB')),
    ),

PHP 页面

$ss1 = new soapvar(array ('name' => 'FolderTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$ss2 = new soapvar(array ('name' => 'DataCenterVMTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$a = array ('name' => 'FolderTraversalSpec', 'type' => 'Folder', 'path' => 'childEntity', 'skip' => false, $ss1, $ss2);
$ss = new soapvar(array ('name' => 'FolderTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$b = array ('name' => 'DataCenterVMTraversalSpec', 'type' => 'Datacenter', 'path' => 'vmFolder', 'skip' => false, $ss);
$res = null;
try
  {
    $request = new stdClass();
    $request->_this = $ret->propertyCollector;
    $request->specSet = array (
                               'propSet' => array (
        array ('type' => 'VirtualMachine', 'all' => 0, 'pathSet' => array('name','runtime.powerState', 'config.hardware.numCPU', 'config.hardware.memoryMB')),
    ),
    'objectSet' => array (
        'obj' => $ret->rootFolder,
        'skip' => false,
        'selectSet' => array (
            new soapvar($a, SOAP_ENC_OBJECT, 'TraversalSpec'),
            new soapvar($b, SOAP_ENC_OBJECT, 'TraversalSpec'),
            ),
        )
    );
     $res = $client->__soapCall('RetrieveProperties', array((array)$request));
   } 
catch (Exception $e)
    {
        echo $e->getMessage();
    }

Var_dump()

object(stdClass)#46 (1) {
  ["returnval"]=>
  array(2) {
    [0]=>
    object(stdClass)#47 (2) {
      ["obj"]=>
      object(stdClass)#48 (2) {
        ["_"]=>
    string(5) "vm-35"
    ["type"]=>
    string(14) "VirtualMachine"
  }
  ["propSet"]=>
  array(4) {
    [0]=>
    object(stdClass)#49 (2) {
      ["name"]=>
      string(24) "config.hardware.memoryMB"
      ["val"]=>
      int(128)
    }
    [1]=>
    object(stdClass)#50 (2) {
      ["name"]=>
      string(22) "config.hardware.numCPU"
      ["val"]=>
      int(1)
    }
    [2]=>
    object(stdClass)#51 (2) {
      ["name"]=>
      string(4) "name"
      ["val"]=>
      string(7) "test123"
    }
    [3]=>
    object(stdClass)#52 (2) {
      ["name"]=>
      string(18) "runtime.powerState"
      ["val"]=>
      string(10) "poweredOff"
    }
  }
}
[1]=>
object(stdClass)#53 (2) {
  ["obj"]=>
  object(stdClass)#54 (2) {
    ["_"]=>
    string(5) "vm-36"
    ["type"]=>
    string(14) "VirtualMachine"
  }
  ["propSet"]=>
  array(4) {
    [0]=>
    object(stdClass)#55 (2) {
      ["name"]=>
      string(24) "config.hardware.memoryMB"
      ["val"]=>
      int(128)
    }
    [1]=>
    object(stdClass)#56 (2) {
      ["name"]=>
      string(22) "config.hardware.numCPU"
      ["val"]=>
      int(1)
    }
    [2]=>
    object(stdClass)#57 (2) {
      ["name"]=>
      string(4) "name"
      ["val"]=>
      string(7) "test456"
    }
    [3]=>
    object(stdClass)#58 (2) {
      ["name"]=>
      string(18) "runtime.powerState"
      ["val"]=>
      string(10) "poweredOff"
        }
      }
    }
  }
}

【问题讨论】：

标签： php arrays loops soap multidimensional-array

【解决方案1】：

我知道这是一个相对简单的解决方法。我将以下内容添加到代码中以获取所需的值。

$tvCPU = 0;
$tvRAM = 0;

echo "<table><tr><td width='450px'>Name</td><td width='100px'>vRAM (MB)</td><td         width='100px'>vCPU</td><td width='100px'>Power State</td></tr>";
$arrlength=count($res ->returnval);
for($x=0;$x<$arrlength;$x++) {
$name = $res -> returnval[$x] -> propSet[2]->val;
$vRam = $res -> returnval[$x] -> propSet[0]->val;
$vCPU = $res -> returnval[$x] -> propSet[1]->val;
$pState = $res -> returnval[$x] -> propSet[3]->val;

echo "<tr><td width='450px'>".$name."</td><td>".$vRam."</td><td>".$vCPU."</td><td>".$pState."</td>    </tr>";
$tvCPU = $tvCPU + $vCPU; 
$tvRAM = $tvRAM + $vRam; 
}
echo "<tr><td width='450px'>Total VMs - ".$x."</td>    <td>". $tvRAM."</td>   <td>". $tvCPU."</td>   </tr>";

【讨论】：