php字符串为数组结构

如何解决php字符串为数组结构

在php中，我需要打开这个数组：

array(
    \'group1_selector1_rule1\' => value,\'group1_selector1_rule2\' => value,\'group1_selector1_rule3\' => value,\'group1_selector2_rule1\' => value,\'group1_selector2_rule2\' => value,\'group2_selector1_rule1\' => value,\'group2_selector1_rule2\' => value,\'group3_selector1_rule1\' => value,\'group3_selector2_rule1\' => value,\'group3_selector2_rule2\' => value
);

到这个：

array(
    \'group1\' => array(

        \'selector1\' => array(
            \'rule1\' => value,\'rule2\' => value,\'rule3\' => value
        ),\'selector2\' => array(
            \'rule1\' => value,\'rule2\' => value
        )

    ) // end group 1,\'group2\' => array(

        \'selector1\' => array(
            \'rule1\' => value,\'rule2\' => value
        )
    ) // end group 2,\'group3\' => array(

        \'selector1\' => array(
            \'rule1\' => value
        ),\'rule2\' => value
        )
    ) // end group 3
); // end array

如果有人想提出一个聪明的方法，我会很感兴趣:) 我想我可以使用一些算法，但是我想要一些优雅的东西，并且感觉到某些对explode（）的巧妙使用和某些'array_merging \'函数可以做到吗？     

解决方法

  $res_array = array();
  foreach ($array as $key=>$value) {
    $x = explode(\"_\",$key);
    $res_array[$x[0]][$x[1]][$x[2]] = $value;
    }

  var_dump($res_array);

为$ array

$array = array(
    \'group1_selector1_rule1\' => \'value1\',\'group1_selector1_rule2\' => \'value2\',\'group1_selector1_rule3\' => \'value3\',\'group1_selector2_rule1\' => \'value4\',\'group1_selector2_rule2\' => \'value5\',\'group2_selector1_rule1\' => \'value6\',\'group2_selector1_rule2\' => \'value7\',\'group3_selector1_rule1\' => \'value8\',\'group3_selector2_rule1\' => \'value9\',\'group3_selector2_rule2\' => \'value10\'
);

输出：

array(3) {
  [\"group1\"]=>
  array(2) {
    [\"selector1\"]=>
    array(3) {
      [\"rule1\"]=>
      string(6) \"value1\"
      [\"rule2\"]=>
      string(6) \"value2\"
      [\"rule3\"]=>
      string(6) \"value3\"
    }
    [\"selector2\"]=>
    array(2) {
      [\"rule1\"]=>
      string(6) \"value4\"
      [\"rule2\"]=>
      string(6) \"value5\"
    }
  }
  [\"group2\"]=>
  array(1) {
    [\"selector1\"]=>
    array(2) {
      [\"rule1\"]=>
      string(6) \"value6\"
      [\"rule2\"]=>
      string(6) \"value7\"
    }
  }
  [\"group3\"]=>
  array(2) {
    [\"selector1\"]=>
    array(1) {
      [\"rule1\"]=>
      string(6) \"value8\"
    }
    [\"selector2\"]=>
    array(2) {
      [\"rule1\"]=>
      string(6) \"value9\"
      [\"rule2\"]=>
      string(7) \"value10\"
    }
  }
}

    ,

<?

$poo=array(
    \'group1_selector1_rule1\' => \'value\',\'group1_selector1_rule2\' => \'value\',\'group1_selector1_rule3\' => \'value\',\'group1_selector2_rule1\' => \'value\',\'group1_selector2_rule2\' => \'value\',\'group2_selector1_rule1\' => \'value\',\'group2_selector1_rule2\' => \'value\',\'group3_selector1_rule1\' => \'value\',\'group3_selector2_rule1\' => \'value\',\'group3_selector2_rule2\' => \'value\'
);

foreach ($poo as $k=>$v){
        list($a,$b,$c) = explode(\'_\',$k);
        $new[$a][$b][$c]=$v;
}
print_r($new);

http://www.ideone.com/skv0a     ,通用解决方案怎么样？

<?php
function transform($oldArray)
{
  $newArray = array();
  foreach ($oldArray as $selector => $value)
  {
    $parts = explode(\'_\',$selector);
    $last = array_pop($parts);
    $arr = &$newArray;

    foreach ($parts as $part)
    {
      if (!is_array($arr[$part])) $arr[$part] = array();
      $arr = &$arr[$part];
    }
    $arr[$last] = $value;
  }
  return $newArray;
}
?>