{
echo $parent."<br />n";
}
else printA($parent);
}
else echo 'NO Parent OR No Search of "'.$key.'"!'."<br /><br />n";
}
class IndexKey
{
private $_arr = array();
public function __construct($data)
{
$this->_createIndex($data);
}
public function printArr()
{
return (Array)$this->_arr;
}
public function search($key)
{
return isset($this->_arr[$key]) ? $this->_arr[$key] : NULL;
}
private function _createIndex($data, $parent = NULL)
{
foreach ($data as $key => $value)
{
$this->_checkIndex($key, $parent);
if (is_array($value))
{
$this->_createIndex($value, $key);
}
}
}
private function _checkIndex($key, $parent)
{
$index = isset($this->_arr[$key]) ? $this->_arr[$key] : NULL;
if ($index)
{
if (is_array($index))
{
array_push($this->_arr[$key], $parent);
}
else $this->_arr[$key] = array($index, $parent);
}
else $this->_arr[$key] = $parent;
}
}
$index = (Object)new IndexKey($arr);
printA($index->printArr());
printP($index, 'beijing');
printP($index, 'name');
printP($index, 'china');
?>
最后只差一个数据的输出了，于是我将这个类修改了下
提供了三个对外的方法
printArr 打印索引数组
search 查询键名的父数组键名
parentValue 查询父键值
/**
* FILE_NAME : arr.php FILE_PATH : test/
* 在多维数组中根据键名快速查询其父键以及父键值
*
* @copyright Copyright (c) 2006-2010 mail:levi@cgfeel.com
* @author Levi
* @package test.arr
* @subpackage
* @version 2011-04-29
*/
header("Content-Type: text/html; charset=utf-8");
$arr = array
(
'china' => array
(
'name' => '中国',
'cite' => array
(
'beijing' => array
(
'name' => '北京',
'site' => array('chaoyang' => '朝阳区', 'xuanwu' => '宣武区')
),
'shanghai' => array
(
'name' => '上海',
'site' => array('jingan' => '静安区', 'huangpu' => '黄浦区')
)
)
)
);
function printA($data)
{
echo '<pre>';
print_r($data);
echo '</pre>';
}
function printP2(IndexArr $obj, $key)
{
$parent = $obj->search($key);
if (!is_array($parent))
{
if ($parent)
{
echo '"'.$key.'" Parent Key is: '.$parent."<br />n";
}
else echo 'NO Parent OR No Search of "'.$key.'"!'."<br />n";;
echo '"'.$key.'" Parent "'.$parent.'" Value is: ';
printA($obj->parentValue($key));
}
else printA($parent);
}
class IndexArr
{
private $_arr = array();
public function __construct($data)
{
$this->_createIndex($data);
}
public function printArr()
{
return (Array)$this->_arr;
}
public function search($key)
{
return isset($this->_arr[$key]) ? $this->_arr[$key]['parent'] : NULL;
