SilverStripe TextRaw2P extension. Converts raw text to html and replaces double line breaks with paragraphs.

TextRaw2P.php

<?php

/**
 * TextRaw2P class.
 * Apply this extension to the Text class to access $YourText.Raw2P in templates.
 *
 */
class TextRaw2P extends DataExtension {

	private static $casting = array(
		'Raw2P' => 'HTMLText'
	);

	/**
	 * Convert raw text to html and replace double line breaks with paragraphs.
	 * 
	 * Before:
	 * -------
	 * Hey this is a paragraph.
	 *
	 * And this is another one.
	 * With a manual line break.
	 * -------
	 * 
	 * After:
	 * -------
	 * <p>Hey this is a paragraph.</p>
	 * <p>And this is another one.<br>
	 * With a manual line break.</p>
	 * -------
	 *
	 * @return string
	 */
	public function Raw2P() {
		$xml = Convert::RAW2XML(trim($this->owner->value));
		$xml = nl2br($xml);
		return '<p>' . preg_replace('#(<br />[\r\n]+){2}#', "</p>\r\n<p>", $xml) . '</p>';
	}

}