<?php function roundRating($rating) { if($rating>=5 && $rating<0){ $rating=0; } $a=(int)$rating/1; $b= $rating-$a; $b = $b.""; if(($b>=0.1) && ($b<=0.2)){ $b=0; $rating=$a; } elseif(($b>=0.3 && $b<=0.4)|| ($b>=0.6 && $b<=0.7)){ $b=.5; $rating=$a+$b; } elseif(($b>=0.8) && ($b<=0.9)){ $b=1; $rating=$a+$b; $a=$rating; } else{} return $rating; } echo roundRating(3.8);