Vitrine/app/View/Helper/TextExtendedHelper.php

<?php

App::uses('TextHelper', 'View/Helper/');

class TextExtendedHelper extends TextHelper {

	private $embedRegexp = array(
		"/<a href=\"(?:http:\\/\\/|https:\\/\\/)?(?:www\\.)?(?:youtube\\.com|youtu\\.be)\\/(?:watch\\?v=)?([^\\&\"]+).*\".*>.*<\\/a>/",
		"/<a href=\"(?:http:\\/\\/|https:\\/\\/)?(?:www\\.)?(?:vimeo\\.com)\\/([^\\&\"]+).*\".*>.*<\\/a>/",
		"/<a href=\"(?:http:\\/\\/|https:\\/\\/)?(?:www\\.)?(?:dailymotion\\.com|dai\\.ly)\\/([^\\&\"]+).*\".*>.*<\\/a>/"
	);

	private $embedIframe = array(
		'<center><iframe width="480" height="270" src="http://www.youtube.com/embed/$1?modestbranding=1&rel=0&wmode=transparent&theme=light&color=white" frameborder="0" allowfullscreen></iframe></center>',
		'<center><iframe src="//player.vimeo.com/video/$1" width="480" height="270" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe></center>',
		'<center><iframe frameborder="0" width="480" height="270" src="http://www.dailymotion.com/embed/video/$1?logo=0&foreground=ffffff&highlight=1bb4c6&background=000000" allowfullscreen></iframe></center>'
	);

	public function autoLink($text, $htmlOptions = array()) {
		$text = parent::autoLink($text, $htmlOptions);
		return preg_replace($this->embedRegexp, $this->embedIframe, $text);
	}

}