drfif48428
2014-03-26 10:27
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将字符串数组转换为多维数组[重复]

This question already has an answer here:

I have inherited a project where I get passed a string via an API request that looks like this:

$return = "state|city|street";

Now I need to convert this into an array that reads

$value = "abcd"; //gets passed by user input
$result['state']['city']['street'] = $value;

The string that gets passed can contain any number of nestings and I don't know the name of the keys upfront. Only thing that is always the same is the delimiter.

The solution implemented by my predecessor is to explode the string and build a new string, then eval() that string:

$return = explode('|',$return);
$value = "abcd"; //gets passed by user input

$arrayString = '$result';
foreach($return as $key)
{
    $arrayString .= "['".$key."']";
}

$arrayString .= '="'.$value.'";' ;
eval($arrayString);

I am sure there is an easy and better way to pull this off but I am too stupid to see it :/ Any hint would be appreciated :)

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此问题已经存在 这里有一个答案:

  • 嵌套编号到数组键 1回答

    我继承了一个项目,我通过API请求传递了一个字符串,如下所示: \ n

      $ return =“state | city | street”; 
       
     
     

    现在我需要将其转换为读取的数组

      $ value =“abcd”;  //通过用户输入传递
     $ result ['state'] ['city'] ['street'] = $ value; 
       
     
     

    字符串 传递可以包含任意数量的嵌套,我不知道密钥的名称。 唯一总是相同的是分隔符。

    我的前任实现的解决方案是爆炸字符串并构建一个新字符串,然后eval()表示字符串:

      $ return = explode('|',$ return); 
     $ value =“abcd”;  //通过用户输入传递
     
     $ arrayString ='$ result'; 
    foreach($ return as $ key)
     {
     $ arrayString。=“['”。$ key。“']”;  
    } 
     
     $ arrayString。='=“'。$ value。'”;''  ; 
    eval($ arrayString); 
       
     
     

    我确信有一个简单而且更好的方法来解决这个问题但是我太傻了看不到:/ \ nAny提示将不胜感激:)

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1条回答 默认 最新

  • donglu6303 2014-03-26 11:16
    已采纳

    Yes, under @Jack suggest I got this working way:

    $str = "state|city|street";
    
    $result = array();
    
    $node = &$result;
    
    foreach(explode("|", $str) as $v)
    {
        $node = &$node[$v];
    }
    
    var_dump($result);  
    
    array (size=1)
        'state' => 
            array (size=1)
                'city' => 
                    array (size=1)
                        'street' => &null
    
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