php实现根据字符串生成对应数组的方法

先看看如下示例：

<?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 ); ?>

根据$config生成以下数组：

<?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 ) ) ); ?>

方法：使用eval实现：

<?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); ?>

输出结果：

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
)
)
)