Getting and placing content within html tag by its class using php

Question

Is it possible to get and place content within an html tag by its class name? For Example:

<div class='edit'>
Wow! I'm the Content.
</div>

Is it possible to get that value, edit and place it back or a new value to that div etc? If it's possible... will it work if it has multiple classes? Like:

<div class='span-20 edit'>
Wow! I'm the Content.
</div>

Answer 1

If you can determine which specific HTML tag to manipulate, you have various tools at your disposal. You can use str_replace, preg_replace, DOMDocument, DOMXPath, and simplexml in this situation.

Answer 2

If in PHP, try this:

$xhtml = simplexml_load_string("<div class='edit'>Wow! I'm the Content.</div>");
$divs = $xhtml->xpath('//div[@class=edit]');
if (!empty($divs){
    foreach ($divs as $div){
        $div['class'] .= ' span-20';
    }
}
return $xhtml->asXML();

With jQuery javascript library, do this:

$('.edit').addClass('span-20');