How To Create Php Star Rating ...

This code allow you to included single or multiple Star Rating Systems on one page, It also allows for ip voting restriction if required, and the ability to set how many times a single ip may vote.

Here is the code that makes up the PHP Star Rating System:

<?

// User settings
$rater_ip_voting_restriction = true; // restrict ip address voting (true or false)
$rater_ip_vote_qty=1; // how many times an ip address can vote
$rater_already_rated_msg="You have already rated this item. You were allowed ".$rater_ip_vote_qty." vote(s).";
$rater_not_selected_msg="You have not selected a rating value.";
$rater_thankyou_msg="Thankyou for voting.";
$rater_generic_text="this item"; // generic item text
$rater_end_of_line_char="n"; // may want to change for different operating systems

if(!isset($rater_id)) $rater_id=1;
if(!isset($rater_item_name)) $rater_item_name=$rater_generic_text;

// DO NOT MODIFY BELOW THIS LINE
$rater_filename=item_.$rater_id.".rating";
$rater_rating=0;
$rater_stars="";
$rater_stars_txt="";
$rater_rating=0;
$rater_votes=0;
$rater_msg="";

// Rating action
if(isset($_REQUEST["rate".$rater_id])){
 if(isset($_REQUEST["rating_".$rater_id])){
  while(list($key,$val)=each($_REQUEST["rating_".$rater_id])){
   $rater_rating=$val;
  }
  $rater_ip = getenv("REMOTE_ADDR");
  $rater_file=fopen($rater_filename,"a+");
  $rater_str="";
  $rater_str = rtrim(fread($rater_file, 1024*8),$rater_end_of_line_char);
  if($rater_str!=""){
   if($rater_ip_voting_restriction){
    $rater_data=explode($rater_end_of_line_char,$rater_str);
 $rater_ip_vote_count=0;
    foreach($rater_data as $d){
  $rater_tmp=explode("|",$d);
  $rater_oldip=str_replace($rater_end_of_line_char,"",$rater_tmp[1]);
  if($rater_ip==$rater_oldip){
   $rater_ip_vote_count++;
  }
    }
 if($rater_ip_vote_count > ($rater_ip_vote_qty - 1)){
     $rater_msg=$rater_already_rated_msg;
 }else{
     fwrite($rater_file,$rater_rating."|".$rater_ip.$rater_end_of_line_char);
     $rater_msg=$rater_thankyou_msg;
 }
   }else{
    fwrite($rater_file,$rater_rating."|".$rater_ip.$rater_end_of_line_char);
    $rater_msg=$rater_thankyou_msg;
   }
  }else{
   fwrite($rater_file,$rater_rating."|".$rater_ip.$rater_end_of_line_char);
   $rater_msg=$rater_thankyou_msg;
  }
  fclose($rater_file);
 }else{
  $rater_msg=$rater_not_selected_msg;
 }
}

// Get current rating
if(is_file($rater_filename)){
 $rater_file=fopen($rater_filename,"r");
 $rater_str="";
 $rater_str = fread($rater_file, 1024*8);
 if($rater_str!=""){
  $rater_data=explode($rater_end_of_line_char,$rater_str);
  $rater_votes=count($rater_data)-1;
  $rater_sum=0;
  foreach($rater_data as $d){
   $d=explode("|",$d);
   $rater_sum+=$d[0];
  }
  $rater_rating=number_format(($rater_sum/$rater_votes), 2, ., );
 }
 fclose($rater_file);
}else{
 $rater_file=fopen($rater_filename,"w");
 fclose($rater_file);
}

// Assign star image
if ($rater_rating <= 0  ){$rater_stars = "./img/00star.gif";$rater_stars_txt="Not Rated";}
if ($rater_rating >= 0.5){$rater_stars = "./img/05star.gif";$rater_stars_txt="0.5";}
if ($rater_rating >= 1  ){$rater_stars = "./img/1star.gif";$rater_stars_txt="1";}
if ($rater_rating >= 1.5){$rater_stars = "./img/15star.gif";$rater_stars_txt="1.5";}
if ($rater_rating >= 2  ){$rater_stars = "./img/2star.gif";$rater_stars_txt="2";}
if ($rater_rating >= 2.5){$rater_stars = "./img/25star.gif";$rater_stars_txt="2.5";}
if ($rater_rating >= 3  ){$rater_stars = "./img/3star.gif";$rater_stars_txt="3";}
if ($rater_rating >= 3.5){$rater_stars = "./img/35star.gif";$rater_stars_txt="3.5";}
if ($rater_rating >= 4  ){$rater_stars = "./img/4star.gif";$rater_stars_txt="4";}
if ($rater_rating >= 4.5){$rater_stars = "./img/45star.gif";$rater_stars_txt="4.5";}
if ($rater_rating >= 5  ){$rater_stars = "./img/5star.gif";$rater_stars_txt="5";}

// Output
echo <div class="hreview">;
echo <form method="post" action=".$_SERVER["PHP_SELF"].">;
echo <h3 class="item">Rate <span class="fn">.$rater_item_name.</span></h3>;
echo <div>;
echo <span  class="rating"><img src=".$rater_stars.?x=.uniqid((double)microtime()*1000000,1)." alt=".$rater_stars_txt. stars" /> Ave. rating: .$rater_stars_txt.</span> from <span class="reviewcount"> .$rater_votes. votes</span>.;
echo </div>;
echo <div>;
echo <label for="rate5_.$rater_id."><input type="radio" value="5" name="rating_.$rater_id.[]" id="rate5_.$rater_id." />Excellent</label>;
echo <label for="rate4_.$rater_id."><input type="radio" value="4" name="rating_.$rater_id.[]" id="rate4_.$rater_id." />Very Good</label>;
echo <label for="rate3_.$rater_id."><input type="radio" value="3" name="rating_.$rater_id.[]" id="rate3_.$rater_id." />Good</label>;
echo <label for="rate2_.$rater_id."><input type="radio" value="2" name="rating_.$rater_id.[]" id="rate2_.$rater_id." />Fair</label>;
echo <label for="rate1_.$rater_id."><input type="radio" value="1" name="rating_.$rater_id.[]" id="rate1_.$rater_id." />Poor</label>;
echo <input type="hidden" name="rs_id" value=".$rater_id." />;
echo <input type="submit" name="rate.$rater_id." value="Rate" />;
echo </div>;
if($rater_msg!="") echo "<div>".$rater_msg."</div>";
echo </form>;
echo </div>;

?>

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