Gets the main image for a YouTube image, to be used for a placeholder.

Displaying Main YouTube Video Image

function getYouTubeKey ( $video )
{
	preg_match ( '#\\?v=([^&]+)\\&#s', $video, $vid );
	
	if ( count ( $vid ) > 0 )
	{	
		// The correct match is the second item in array
		return $vid[ 1 ];
	}
	else
		return $video;
}

$video = 'http://www.youtube.com/watch?v=XlpC8-9iI0A&feature=g-vrec';


<img src="http://img.youtube.com/vi/<?php echo getYouTubeKey ( $video ); ?>/2.jpg" width="663" height="365">

For the regex, instead of (.+) you would be better doing something like ([^&]+) which basically means match anything BUT NOT the ampersand. This should be better performing than the . Character as it'll mean less backtracking by the regex engine

Cool! Changed and works nicely