html - PHP - How to replace a phrase with another?

Question

How can i replace this <p><span class="headline"> with this <p class="headline"><span> easiest with PHP.

$data = file_get_contents("http://www.ihr-apotheker.de/cs1.html");
$clean1 = strstr($data, '<p>');
$str = preg_replace('#(<a.*>).*?(</a>)#', '$1$2', $clean1);
$ausgabe = strip_tags($str, '<p>');
echo $ausgabe;

Before I alter the html from the site I want to get the class declaration from the span to the <p> tag.

Answer 1

dont parse html with regex! this class should provide what you need http://simplehtmldom.sourceforge.net/