Getting element inside other element by class php DOMDocument - php

Question

Hi Guys i do have this Html Code :
<div class="post-thumbnail2">
<a href="http://example.com" title="Title">
<img src="http://linkimgexample/image.png" alt="Title"/>
</a>
</div>
I want to get the value of src image (http://linkimgexample/image.png) and the value of the href link (http://example.com) using php DOMDocument
what i did to get the link was something like that :
$divs = $dom->getElementsByTagName("div");
foreach($divs as $div) {
$cl = $div->getAttribute("class");
if ($cl == "post-thumbnail2") {
$links = $div->getElementsByTagName("a");
foreach ($links as $link)
echo $link->getAttribute("href")."<br/>";
}
}
i could do the same for src img
$imgs = $div->getElementsByTagName("img");
foreach ($imgs as $img)
echo $img->getAttribute("src")."<br/>";
but sometime in the website there is no image and the Html code is like that :
<div class="post-thumbnail2">
</div>
so my questions is how could i get the 2 value at the same time it means when there is no image i show some message
to be more clear this is an example :
<div class="post-thumbnail2">
<a href="http://example1.com" title="Title">
<img src="http://linkimgexample/image1.png" alt="Title"/>
</a>
</div>
<div class="post-thumbnail2">
</div>
<div class="post-thumbnail2">
<a href="http://example3.com" title="Title">
<img src="http://linkimgexample/image2.png" alt="Title"/>
</a>
</div>
i want the result to be
http://example1.com - http://linkimgexample/image1.png
http://example2.com - there is no image here !
http://example3.com - http://linkimgexample/image2.pn

Answer 1

DOMElement::getElementsByTagName returns a DOMNodeList, that means you can find out if a img-element was found by checking the length property.
$imgs = $div->getElementsByTagName("img");
if($imgs->length > 0) {
foreach ($imgs as $img)
echo $img->getAttribute("src")."<br/>";
} else {
echo "there is no image here!<br/>";
}
You should think about using XPath - it makes your life traversing the DOM a bit easier:
$doc = new DOMDocument();
if($doc->loadHtml($xmlData)) {
$xpath = new DOMXPath($doc);
$postThumbLinks = $xpath->query("//div[#class='post-thumbnail2']/a");
foreach($postThumbLinks as $link) {
$imgList = $xpath->query("./img", $link);
$imageLink = "there is no image here!";
if($imgList->length > 0) {
$imageLink = $imgList->item(0)->getAttribute('src');
}
echo $link->getAttribute('href'), " - ", $link->getAttribute('title'),
" - ", $imageLink, "<br/>", PHP_EOL;
}
} else {
echo "can't load HTML document!", PHP_EOL;
}