递归多级采集
说明
可以在getData()方法中多次调用QueryList来实现递归多级采集。
示例
<?php
require 'QueryList/vendor/autoload.php';
use QL\QueryList;
//获取每个li里面的h3标签内容，和class为item的元素内容
$html =<<<STR
<div id="demo">
<ul>
<li>
<h3>xxx</h3>
<div class="list">
<div class="item">item1</div>
<div class="item">item2</div>
</div>
</li>
<li>
<h3>xxx2</h3>
<div class="list">
<div class="item">item12</div>
<div class="item">item22</div>
</div>
</li>
</ul>
</div>
STR;
$data = QueryList::Query($html,array(
'title' => array('h3','text'),
'list' => array('.list','html')
),'#demo li')->getData(function($item){
$item['list'] = QueryList::Query($item['list'],array(
'item' => array('.item','text')
))->data;
return $item;
});
print_r($data);
/**
结果:
Array
(
[0] => Array
(
[title] => xxx
[list] => Array
(
[0] => Array
(
[item] => item1
)
[1] => Array
(
[item] => item2
)
)
)
[1] => Array
(
[title] => xxx2
[list] => Array
(
[0] => Array
(
[item] => item12
)
[1] => Array
(
[item] => item22
)
)
)
)
*/