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PHP Star Rating function

/ Published in: PHP
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I recently wanted to use stars to show my skill levels in various aspects of web design in my portfolio e.g, PHP, MySQL etc; similar to a rating system. It would be repetitive to have to copy the HTML image code over and over or to design various ratings in photoshop.

So I came up with this function, all you need are three images: a full rating star, a half rating star and an grayed out unrated star

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Copy this code and paste it in your HTML 
  1. function display_skill_level ( $number ) {
  2.     // Convert any entered number into a float
  3.     // Because the rating can be a decimal e.g. 4.5
  4.     $number = number_format ( $number, 1 );
  5.  
  6.     // Get the integer part of the number
  7.     $intpart = floor ( $number );
  8.  
  9.     // Get the fraction part
  10.     $fraction = $number - $intpart;
  11.  
  12.     // Rating is out of 5
  13.     // Get how many stars should be left blank
  14.     $unrated = 5 - ceil ( $number );
  15.  
  16.     // Populate the full-rated stars
  17.     if ( $intpart <= 5 ) {
  18.         for ( $i=0; $i<$intpart; $i++ )
  19. 	    echo '<img src="/images/star-rating-full.png" />';
  20.     }
  21.  
  22.     // Populate the half-rated star, if any
  23.     if ( $fraction == 0.5 ) {
  24.         echo '<img src="/images/star-rating-half.png" />';
  25.     }
  26.  
  27.     // Populate the unrated stars, if any
  28.     if ( $unrated > 0 ) {
  29.         for ( $j=0; $j<$unrated; $j++ )
  30. 	    echo '<img src="/images/star-rating-none.png" />';
  31.     }
  32. }

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