本文实例讲述了php实现根据字符串生成对应数组的方法，是比较实用的技巧。分享给大家供大家参考。具体方法如下：
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
)
)
)
希望本文所述对大家PHP程序设计的学习有所帮助。
原文：http://www.jb51.net/article/55472.htm