Help with elseif in function

1

i cant seem to figure this out. the rating is coming out all screwed up.

i
made the code easier to read by just making a test version of the
original function. i added .= to the test part it seems to be
evaluating the middle three as average in the else statement even
though it evaluated the rating -5.

any help is much appreciated,

<style>
.items-box{ font-size:16px;}
.item{background-color: #CCCCCC; border-bottom:solid 2px; }
.greaterthan{ color: #006600;padding:0px 10px;}
.lessthan{ color: #FF0000;padding:0px 10px;}
.average{ color: #0066FF;padding:0px 10px;}
.rating{ font-size:14px; font-weight:bold; padding:0px 10px;}
</style>
<div class="items-box">
<?php
$tree = array( array( id => "1", 
                      name => "1st",
	              rating => "5",
                      parentid => "0" 
                    ),
               array( id => "2", 
                      name => "reply",
		      rating => "0",
                      parentid => "1"
                    ),
               array( id => "3", 
                      name => "reply",
		      rating => "-5",
                      parentid => "1" 
                    ),
		array( id => "4", 
                      name => "2nd topic",
			rating => "-1",
                      parentid => "0" 
                    ),
	        array( id => "5", 
                      name => "reply 2nd",
		     rating => "5",
                      parentid => "4" 
                    ),		
		array( id => "6", 
                      name => "reply",
		      rating => "3",
                      parentid => "1" 
                    )	
             );

 function itemsFormat($parent, $tree) {
       foreach ($tree as $item) {
	  
	   
        if($parent == $item['parentid']) {
		
		
	///rating	
	$rating = $item['rating'];
	   
	   if($rating  >= 5){
		$test.='<span class="greaterthan">greater than or equal to 5</span>';
	   }elseif($rating <= -5){ 
	   $test.='<span class="lessthan">less than or equal to -5</span>';
	   }else{
	   $test.='<span class="average">average</span>';
	   }
		
		
		
		
          $output .= '<div class="item">';
          $output .= '<span>' . $item['name'] .'<span class="rating">rating:'.$item['rating'].'</span>_test:'.$test. '</span>';
		  $output .= '</div>';
		  
          $output .= itemsFormat($item['id'], $tree);
          
        }
      }

      return $output;
    }
echo itemsFormat(0, $tree);
echo '</div>';


///output raw array for testing
//print '<pre>'; var_dump($tree); print '</pre>';


die();
?>