PHP - How to replace a phrase with another?

Question

How can i replace this

with this

easiest with PHP.

Answer 1

Well, answer was accepted already, but anyway, here is how to do it with native DOM:

$dom = new DOMDocument;
$dom->loadHTMLFile("http://www.ihr-apotheker.de/cs1.html");
$xPath = new DOMXpath($dom);

// remove links but keep link text
foreach($xPath->query('//a') as $link) {
    $link->parentNode->replaceChild(
        $dom->createTextNode($link->nodeValue), $link);
}

// switch classes    
foreach($xPath->query('//p/span[@class="headline"]') as $node) {
    $node->removeAttribute('class');
    $node->parentNode->setAttribute('class', 'headline');
}
echo $dom->saveHTML();

On a sidenote, HTML has elements for headings, so why not use a element instead of using the semantically superfluous "headline" class.