html DOM program to find href value - php

Question

I am a newbie in php and I have been assigned with a project to fetch the HREF value from the following HTML snippet:
<p class="title">
<a href="http://canon.com/">Canon Pixma iP100 + Accu Kit
</a>
</p>
Now for this am using the following code:
$dom = new DOMDocument();
#$dom->loadHTML($html);
foreach($dom->getElementsByTagName('p') as $link) {
# Show the <a href>
foreach($link->getElementsByTagName('a') as $link)
{
echo $link->getAttribute('href');
echo "<br />";
}
}
This code gives me the HREF value of all <a href> from all the <P> tag in that page. I want to parse the <P> with the class "title" only...I can't use Simple_HTML_DOM or any kind of library here.
Thanks in advance.

Answer 1

Alternatively, you could use DOMXpath for this one. Like this:
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXpath($dom);
// target p tags with a class with "title" with an anchor tag
$target_element = $xpath->query('//p[#class="title"]/a');
if($target_element->length > 0) {
foreach($target_element as $link) {
echo $link->getAttribute('href'); // http://canon.com/
}
}
Or If if you want to traverse it. Then you need to have to search it manually.
foreach($dom->getElementsByTagName('p') as $p) {
// if p tag has a "title" class
if($p->getAttribute('class') == 'title') {
foreach($p->childNodes as $child) {
// if has an anchor children
if($child->tagName == 'a' && $child->hasAttribute('href')) {
echo $child->getAttribute('href'); // http://cannon.com
}
}
}
}