Excerpt problems shwing 00000 before excerpt

Hi guys, i have a problem i receive 00000 or 001000 in front of excerpts and then the text. Why cause that? My custom excerpt function is bellow:

function locality_excerpt($len=80, $trim="…")
	  	{
		  	$limit = $len+1;
		  	$excerpt = explode(' ', get_the_excerpt(), $limit);
		  	$num_words = count($excerpt);
		  	if($num_words >= $len)
			{
		  		$last_item=array_pop($excerpt);
		  	}
		  	else
		  	{
		  		$trim="";
		  	}
		  	$excerpt = implode(" ",$excerpt)."$trim";

		  	echo $excerpt;
	  	}

	  	function get_locality_excerpt($len=80, $trim="…")
	  	{
	  		$limit = $len+1;
	  		$excerpt = explode(' ', get_the_excerpt(), $limit);
	  		$num_words = count($excerpt);
		  	if($num_words >= $len){
		  		$last_item=array_pop($excerpt);
		  	}
		  	else
		  	{
		  		$trim="";
		  	}
	  		$excerpt = implode(" ",$excerpt)."$trim";

	  		return $excerpt;
	  	}