Using pipe (' | ') to separate nav links [update]

Hi, i was checking for a suitable function for listing the pages with pipes in footer. I have found a useful post here

The last guy used the method for string replacing. Some how his function is not suitable for me because it was still echoing the li. So i modified the code placed it in a function. The topic was closed. So, i post it here. You might found this useful.

function page_list_with_pipe(){
	// wp_page_list with separator element
	$args = array(
		'title_li' => '',
		'exclude'		=> '120,121',
		'child_of'	=> 0,
		'parent'		=> 0,
		'exclude_tree'	=> '',
		'hierarchical'	=> 1,
		'echo' => 0 );

	$pgl=wp_list_pages( $args );
	$sep=' | '; //  separator
	$rep1='<li';
	$rep1by='<span'; // replacing the <li with <span
	$rep2='</li>';
	$rep2by=$sep.'</span>'; // replacing </li> with </span>
	$pgl=str_replace($rep1,$rep1by,$pgl);
	$pgl=str_replace($rep2,$rep2by,$pgl);
	if($sep!='') :
	$pgl=strrev($pgl); $sep=strrev($sep); // this is needed for removing the last separator
	$pgl=explode($sep,$pgl,2); // this is needed for removing the last separator
	$pgl=implode('',$pgl); $pgl=strrev($pgl); // this is needed or removing the last separator
	endif;
	echo $pgl; // echo pagelist
}
?>

In my personal opinion this kinds of function should be include in wordpress (or may be there is and i don’t know!) anyone can post upgraded code. Thanks!