SilverStripe HTMLText Extension

CustomTextExtension.php

<?php 

class CustomTextExtension extends Extension {

  public function Paragraph($count){
     $doc = new SS_HTMLValue($this->owner->value);
     $content = $doc->getElementsByTagName('p');
     $current = 0;
     foreach($content as $p){
        ++$current;
        if($x == $count)
           return $p->nodeValue;
     }
}