Showing images for rating

[etrader]

I have a string for rating, containing numbers from 0-5. How I can assign an image to each range:

 

0-0.5 displaying 05.jpg

0.5-1.0 displaying 10.jpg

.

.

.

4.5-5.0 displaying 50.jpg

 

[sasa]

if rating is 0.5 do you like to display 05.jpg or 10.jpg?

<?php
$test = .5;
echo $im= sprintf('%02d.jpg', ceil($test*2)*5),"<br />\n";
echo $im= sprintf('%02d.jpg', (floor($test*2)+1)*5);
?>

[etrader]

Thanks sasa, it works perfectly 

 

Definitely, I meant the first one, as the second one may lead to 5.5, which is indeed invalid.

 

Thanks for your kind support