Rating System

**Wondervideo** · 05-15-2006, 04:59 PM

(Don't know if this is the right forum i've putted this post in?)

Anybody how got a code for a rating system???

**Twey** · 05-15-2006, 05:11 PM

(Don't know if this is the right forum i've putted this post in?)

No, you haven't.

A rating system requires a server-side language to be installed and enabled on your server, since it must store data server-side.

**oompaloompa** · 05-18-2006, 04:51 AM

Originally Posted by Twey

No, you haven't.

A rating system requires a server-side language to be installed and enabled on your server, since it must store data server-side.

You have come to the right section... You can code a rating system in PHP.... You will need a database to store the information but the SYSTEM itself can be coded in php...

Here is Something Like what I use:

Put The Following Code into a php file:

PHP Code:


<?



// 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>';



?>

This is the part you will need to edit:

PHP Code:


// 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

**djr33** · 05-18-2006, 05:35 AM

Rating systems are a great example of a very usual use of a database. You need a filename and a rating field in the table... and you're done.
Of course there's more work, but it's pretty simple in general concept.

check out the above code.. or look into any simple mysql/php tutorial... shouldn't be too hard to figure out