抓取所有图片来自特定的div SRC

Question

想，我有HTML结构，如：

<div> 
     <div class="content"> 
      <p>This is dummy text</p> 
      <p><img src="a.jpg"></p> 
      <p>This is dummy text</p> 
      <p><img src="b.jpg"></p> 
     </div> 
</div> 

我想从.content DIV获取所有图片src。我想：

<?php 
// a new dom object 
$dom = new domDocument; 

// load the html into the object 
$dom->loadHTML("example.com/article/2345"); 

// discard white space 
$dom->preserveWhiteSpace = false; 
//get element by class 
$finder = new DomXPath($dom); 
$classname = 'content'; 
$content = $finder->query("//*[contains(@class, '$classname')]"); 
foreach($content as $item){ 
    echo $item->nodevalue; 
} 

但是，我不能当我遍历$content得到任何东西。请帮忙。

Answer 1

更改您的XPath查询，如下图所示：

// loading html content from remote url 
$html = file_get_contents("http://nepalpati.com/entertainment/22577/"); 
@$dom->loadHTML($html); 
... 
$classname = 'content'; 
$img_sources = []; 

// getting all images within div with class "content" 
$content = $finder->query("//div[@class='$classname']/p/img"); 
foreach ($content as $img) { 
    $img_sources[] = $img->getAttribute('src'); 
} 
... 
var_dump($img_sources); 
// the output: 

array(2) { 
    [0]=> 
    string(68) "http://nepalpati.com/mediastorage/images/2072/Falgun/khole-selfi.jpg" 
    [1]=> 
    string(72) "http://nepalpati.com/mediastorage/images/2072/Falgun/khole-hot-selfi.jpg" 
}