从页面上的内容获取HREF值

Question

I am getting data from a page that is formatted like this

<span id="RANDOMINFO">
 <a href="/DEMO/RANDOMDATA">+</a>
 <span title="1">DATA I WANT HERE</span> 
<a href="https://URL.COM/">CLICK</a> 
<a href="https://URL.COM/">MORE RANDOM DATA</a>
</span>
<span id="RANDOMINFO">
 <a href="/DEMO/RANDOMDATA">+</a>
 <span title="2">DATA I WANT HERE</span> 
<a href="https://URL.COM/RANDOM">CLICK</a> 
<a href="https://URL.COM/RANDOM">MORE RANDOM DATA</a>
</span>

How can I get the href value from the page

Here is the code I have to get the data from the span ID but don't know how to do it for the href as there is no name or id

       $doc = new DOMDocument();
        @$doc->loadHTML($html2);
                foreach($doc->getElementsByTagName('span') as $element ) 
                    { 
                        if (!empty($element->attributes->getNamedItem('id')->value)) 
                        { 
                        $filename = 'newpks/'.$f.'.txt';
                         $file = fopen($filename,"a");

                        $data = $element->attributes->getNamedItem('id')->value.PHP_EOL;
                        fwrite($file,$data);
                        fclose($file);
                        $i++;
                        $end = $start;
                        }
                    }

Answer 1

I assume you're only interested in links with the href attribute, and then we know the tags will be of type a . This should sufficient (I haven't been able to test the code though).

I optimized the code a bit, since the DOMNode class inherits from DOMElement you can use the hasAttribute and getAttribute instead.

foreach($doc->getElementsByTagName('a') as $element ) { 
    if ($element->hasAttribute('href')) { 
        $href = $element->getAttribute('href');
        // Do your work here
    }
}