Question

有一个PHP脚本使用python脚本获取新数据。我能够foreach循环并获取数组的key2和value2，但无法获取$address和$product变量以将其放入$ shell命令。我的变量出了什么问题？刚开始编写代码，如果有人教我这一点将很有帮助。

foreach ($gotdata as $key1 => $value1) {
  foreach ($value1 as $key2 => $value2) {

    //print " key2: " . $key2 . " value2: ". $value2; 

    $address = "";
    $maker = ""; 

    if($key2 == 'Address'){
      $address = $value2;
      print "address: ".$address; //able to get it on console
    }  
    if($key2 == 'Product'){
      $product = $value2;
      print "product: ".$product; //able to get it on console
    }  
    

    $shell = 'python /opt/getdata.py '.$address.' '.$product;
    print "shell:" . $shell; //not able to get $address and $product 
    // $current = shell_exec($shell);
    // $current = (int)$current;
    // print "current:" . $current;

  }
}

这是多维数组的样子。
每次我运行脚本时，主数组的大小都不同。可能是10或14等。
的另一方面，子数组始终具有相同的六个项目。

array(2) {
  [0]=>
  array(6) {
    ["Id"]=>
    string(1) "1"
    ["Name"]=>
    string(15) "name01"
    ["Address"]=>
    string(12) "1.1.1.1"
    ["Product"]=>
    string(1) "1"
    ["Current"]=>
    string(3) "111"
    ["DateTime"]=>
    string(19) "2020-09-09 15:03:46"
  }
  [1]=>
  array(6) {
    ["Id"]=>
    string(1) "2"
    ["Name"]=>
    string(15) "name02"
    ["Address"]=>
    string(12) "1.1.1.2"
    ["Product"]=>
    string(1) "1"
    ["Current"]=>
    string(3) "111"
    ["DateTime"]=>
    string(19) "2020-09-09 15:03:46"
  }

Answer 1

我假设您可以直接从主循环访问所需的值。

编辑：现在已经发布了数组，我确定这可以正常工作。
无需嵌套循环数组

foreach ($gotdata as $key1 => $value1) {
    $shell = 'python /opt/getdata.py '.$value1['Address'] . ' ' . $value1['Product'];
    print "shell:" . $shell; //not able to get $address and $product 
}

嵌套foreach循环与访问子数组项相同。

Answer 2

我不知道你的愿望输出是什么。但是，如果您想要两个值。试试吧

 foreach ($gotdata as $key1 => $value1) {
 $address = "";
   $product = ""; 
  foreach ($value1 as $key2 => $value2) {

    //print " key2: " . $key2 . " value2: ". $value2; 

   

    if($key2 == 'Address'){
      $address = $value2;
      print "address: ".$address; //able to get it on console
    }  
    elseif($key2 == 'Product'){
      $product = $value2;
      print "product: ".$product; //able to get it on console
    }  
    
    if($address!="" && $product!=""){
    $shell = 'python /opt/getdata.py '.$address.' '.$product;
    print "shell:" . $shell; //not able to get $address and $product 
    }
    // $current = shell_exec($shell);
    // $current = (int)$current;
    // print "current:" . $current;

  }
}

您还没有在代码中定义$ product。

PHP变量，我的代码有什么问题？

2 个答案: