dongpu2694
2015-11-17 15:00
浏览 140
已采纳

在foreach中创建数组,键是循环中的第一个值

I have some filters:

$filters = array('rooms-4-5', 'city-london-berlin-paris');

and I wanna create a array like this:

array(
     'rooms' => array('4', '5'),
     'city'  => array('london', 'berlin', 'paris')
);

I tried:

    foreach($filters as $filter):
        $filter = explode('-', $filter);
        $data[$filter[0]] = array();
        array_shift($filter);
        foreach($filter as $value):
            //here I am stuck ...
        endforeach;
    endforeach;

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我有一些过滤器:

  $ filters = array(  'rooms-4-5','city-london-berlin-paris'); 
   
 
 

我想创建一个这样的数组: \ n

 数组(
'rooms'=>数组('4','5'),
'city'=>数组('london','berlin','paris  ')
); 
   
 
 

我试过:

  foreach($ filters as $ filter):\  n $ filter = explode(' - ',$ filter); 
 $ data [$ filter [0]] = array(); 
 array_shift($ filter); 
 foreach($ filter as $ value):\  n //在这里我被卡住了... 
 endforeach; 
 endforeach; 
   
 
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1条回答 默认 最新

  • dongpa6867 2015-11-17 15:05
    已采纳

    You seem to have been fairly close, except for that fact that you already have the array elements in $filter and you only needed to remove the first variable (by using array_shift()) and insert it.

    The thing is that array_shift() (link to documentation) returns the removed value so you can store that in the array and use it for the key. And the array after shifting is ready to be used.

    Here's the full result:

    <?php
    $filters = array('rooms-4-5', 'city-london-berlin-paris');
    $out = array();
    foreach($filters as $filter) {
        $filter_exploded = explode('-',$filter);
        $val = array_shift($filter_exploded); // remove first element, add it to the variable
        $out[$val] = $filter_exploded;
    }
    var_dump($out);
    
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