preg_replace probleem

<?php
	function imdb ($imdb) {
		$f = file_get_contents('http://www.imdb.com/title/'.$imdb.'/');
		$cntnt = explode ('<a href="/rg/title-tease/rating-stars/title/'.$imdb.'/ratings">',$f);
		$nl = explode('\n', $cntnt);
		return '<font color="red"><strong>IMDB Number: </strong></font><a href="http://www.imdb.com/title/'.$imdb.'/" target="_blank">\\1</a> '.$nl[2];
	}
	
	$message = preg_replace('#\[imdb=(.*?)\]#si', imdb('\\1'), $message);
	$message = preg_replace('#\[imdb\](.*?)\[/imdb\]#si', imdb('\\1'), $message);
?>

<?php
	function imdb ($imdb) {
		$f = file_get_contents('http://www.imdb.com/title/'.$imdb.'/');
		$cntnt = explode ('<a href="/rg/title-tease/rating-stars/title/'.$imdb.'/ratings">',$f);
		$nl = explode('\n', $cntnt);
		return '<font color="red"><strong>IMDB Number: </strong></font><a href="http://www.imdb.com/title/'.$imdb.'/" target="_blank">\\1</a> '.$nl[2];
	}
 
	$message = preg_replace('#\[imdb=(.*?)\]#si', imdb('\\1'), $message);
	$message = preg_replace('#\[imdb\](.*?)\[/imdb\]#si', imdb('\\1'), $message);
?>