php中如何根據字串產生對應數組方法

例如：

<?php  $config = array(      'project|page|index' => 'content',      'project|page|nav' => array(              array(                  'image' => '1.jpg',                  'name' => 'home'            ),              array(                  'image' => '2.jpg',                  'name' => 'about'            )      ),      'project|page|open' => true  );  ?>

根據$config產生以下數組

<?php  $result = array(      'project' => array(          'page' => array(              'index' => 'content',              'nav' => array(                      array(                          'image' => '1.jpg',                          'name' => 'home'                    ),                      array(                          'image' => '2.jpg',                          'name' => 'about'                    )              ),              'open' => true          )          )  );  ?>

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方法：使用eval實現

<?php  $config = array(      'project|page|index' => 'content',      'project|page|nav' => array(              array(                  'image' => '1.jpg',                  'name' => 'home'            ),              array(                  'image' => '2.jpg',                  'name' => 'about'            )      ),      'project|page|open' => true  );        $result = array();  foreach($config as $key=>$val){                $tmp = '';      $keys = explode('|', $key);                for($i=0,$len=count($keys); $i<$len; $i++){          $tmp .= "['".$keys[$i]."']";      }                if(is_array($val)){          eval('$result'.$tmp.'='.var_export($val,true).';');      }elseif(is_string($val)){          eval('$result'.$tmp.'='.$val.';');      }else{          eval('$result'.$tmp.'=$val;');      }        }        print_r($result);        ?>

輸出結果：

Array  (      [project] => Array          (              [page] => Array                  (                      [index] => content                      [nav] => Array                          (                              [0] => Array                                  (                                      [image] => 1.jpg                                      [name] => home                                  )                              [1] => Array                                  (                                      [image] => 2.jpg                                      [name] => about                                  )                          )                      [open] => 1                  )          )  )