Scratch

<?php
function writetextimage($string, $substring) {
    if ($_REQUEST['type'] == 'post') {
        $img = imagecreatefrompng ('bgpost.png');
        $text_colour = imagecolorallocate($img, 254, 254, 254);
    }
    else {
        $img = imagecreatefrompng ('bg.png');
        $text_colour = imagecolorallocate($img, 1, 1, 1);
    }
    $font = realpath('font.ttf');
    imagettftext($img, 7, 0, 10, imagefontheight(7), $text_colour, $font, $string);
    imagettftext($img, 7, 0, 10, 28, $text_colour, $font, $substring);
    $whit = imagecolorallocate($img, 0, 0, 0);
    imagecolortransparent($img, $whit);
    header('Content-type: image/png');
    imagepng($img);
    imagecolordeallocate($text_color);
    imagedestroy($img);
}

include 'mysql.php';
$topicid = $_REQUEST['id'];
$userip = $_SERVER['REMOTE_ADDR'];
if ($_REQUEST['forum'] == 'tbg') {
    $url = 'http://scratch.mit.edu/tbgforums/viewtopic.php?id=' . $topicid;
    $database = 'tbg_topicrate';
    if ($_REQUEST['type'] == 'post') {
        $url = 'http://scratch.mit.edu/tbgforums/viewtopic.php?pid=' . $topicid . '#p' . $topicid;
        $database = 'tbg_postrate';
    }
}
else {
    $url = 'http://scratch.mit.edu/forums/viewtopic.php?id=' . $topicid;
    $database = 'topicrate';
    if ($_REQUEST['type'] == 'post') {
        $url = 'http://scratch.mit.edu/forums/viewtopic.php?pid=' . $topicid . '#p' . $topicid;
        $database = 'postrate';
    }
}

if ($_REQUEST['ret'] == 'image') {
    if (is_numeric($topicid) === false) {
        writetextimage('Error: id is not valid', '');
        exit();
    }
    $urlcontents = trim(file_get_contents($url));
    if (strpos($urlcontents, $bdrq) != false) {
        writetextimage('Error:', 'id not found');
        exit();
    }
    mysql_connect($mysql_host, $mysql_user, $mysql_password) or die(mysql_error());
    mysql_select_db($mysql_database) or die(mysql_error());
    $checkquery = mysql_query("SELECT * FROM $database WHERE postid='$topicid'");
    if (mysql_num_rows($checkquery) == 0) {
        $likes = 0;
    }
    else {
        $topicratings = mysql_fetch_row($checkquery) or die(mysql_error());
        $ratedips = explode(',', $topicratings[1]);
        $likes = count($ratedips);
        if ($ratedips[0] == '') {
            $likes = 0;
        }
    }
    if ($likes == 1) {
        $likes = 1 . ' Like';
        if($_REQUEST['verb'] == 'love') {
            $likes = 1 . ' Love-it';
        }
    }
    else {
        if($_REQUEST['verb'] == 'love') {
            $likes = $likes . ' Love-its';
        }
        else {
            $likes = $likes . ' Likes';
        }
    }
    $checkquery = mysql_query("SELECT * FROM $database WHERE postid='$topicid'");
    if (mysql_num_rows($checkquery) == 0) {
        $already_liked = 'Like This';
        if ($_REQUEST['verb'] == 'love') {
            $already_liked = 'Love it?';
        }
    }
    else {
        $topicratings = mysql_fetch_row($checkquery) or die(mysql_error());
        $ratedips = explode(',', $topicratings[1]);
        $count = count($ratedips);
        if ($_REQUEST['verb'] == 'love') {
            $already_liked = 'Love it?';
        }
        else {
            $already_liked = 'Like This';
        }
        for($i=0; $i<$count; $i++) {
            if($ratedips[$i] == $userip) {
                $already_liked = 'Unlike This';
                if ($_REQUEST['verb'] == 'love') {
                    $already_liked = 'I love it!';
                }
            }
        }
    }
    writetextimage($likes, $already_liked);
}
elseif ($_REQUEST['ret'] == 'add') {
    if (is_numeric($topicid) === false) {
        writetextimage('Error: id is not valid', '');
        exit();
    }
    $urlcontents = trim(file_get_contents($url));
    if (strpos($urlcontents, $bdrq) != false) {
        writetextimage('Error: id not found', '');
        exit();
    }
    $headerurl = 'Location:' . $url;
    mysql_connect($mysql_host, $mysql_user, $mysql_password) or die(mysql_error());
    mysql_select_db($mysql_database) or die(mysql_error());
    $checkquery = mysql_query("SELECT * FROM $database WHERE postid='$topicid'");
    if (mysql_num_rows($checkquery) == 0) {
        $addtopic_query = mysql_query("INSERT INTO $database (postid, ips) VALUES ('$topicid', '$userip')");
        header($headerurl);
        exit();
    }
    else {
        $topicratings = mysql_fetch_row($checkquery) or die(mysql_error());
        $ratedips = explode(',', $topicratings[1]);
        $count = count($ratedips);
        for($i=0; $i<$count; $i++) {
            if($ratedips[$i] == $userip) {
                unset($ratedips[$i]);
                $ratedips = implode(',', $ratedips);
                $updateips_query = mysql_query("UPDATE $database SET ips='$ratedips' WHERE postid='$topicid'") or die(mysql_error());
                header($headerurl);
                exit();
            }
        }
        $ratedips[$count] = $userip;
        $ratedips2 = implode(',', $ratedips);
        if ($ratedips[0] == '') {
            $ratedips2 = $userip;
        }
        $updateips_query = mysql_query("UPDATE $database SET ips='$ratedips2' WHERE postid='$topicid'") or die(mysql_error());
        header($headerurl);
        exit();
    }
}
elseif ($_REQUEST['ret'] == 'top') {
    if($_REQUEST['forum'] == 'tbg') {
        if ($_REQUEST['type'] == 'post') {
            $database = 'tbg_postrate';
            $type = 'Post';
        }
        else {
            $database = 'tbg_topicrate';
            $type = 'Topic';
        }
    }
    else {
        if ($_REQUEST['type'] == 'post') {
            $database = 'postrate';
            $type = 'Post';
        }
        else {
            $database = 'topicrate';
            $type = 'Topic';
        }
    }
    mysql_connect($mysql_host, $mysql_user, $mysql_password) or die(mysql_error());
    mysql_select_db($mysql_database) or die(mysql_error());
    $query = mysql_query("SELECT * FROM $database");
    for($i=0;$i<mysql_num_rows($query);$i++) {
        $temp = mysql_fetch_row($query);
        $postids[$i] = $temp[0];
        $ips[$i] = count(explode(',', $temp[1])) . ',' . $i;
        $ipssort[$i] = $ips[$i];
    }
    rsort($ipssort, SORT_NUMERIC);
    for($i=0;$i<count($postids);$i++) {
        if($ips[$i] == $ipssort[$_REQUEST['rank']-1]) {
            $winnerpost = $postids[$i];
        }
    }
    if(!isset($ipssort[$_REQUEST['rank']-1])) {
        writetextimage('Error: Post with that', 'rank doesn\'t exist');
        exit();
    }
    if($_REQUEST['verb'] == 'love') {
        $likes = $likes . ' Love-its';
    }
    else {
        $likes = $likes . ' Likes';
    }
    $explodedip = explode(',', $ipssort[$_REQUEST['rank']-1]);
    writetextimage($_REQUEST['rank'] . '.' . " $type " . $winnerpost, $explodedip[0] . $likes);
}
elseif ($_REQUEST['ret'] == 'toplink') {
    if($_REQUEST['forum'] == 'tbg') {
        if ($_REQUEST['type'] == 'post') {
            $database = 'tbg_postrate';
            $url = 'http://scratch.mit.edu/tbgforums/viewtopic.php?pid=';
            $afterbit = '#p';
        }
        else {
            $database = 'tbg_topicrate';
            $url = 'http://scratch.mit.edu/tbgforums/viewtopic.php?id=';
        }
    }
    else {
        if ($_REQUEST['type'] == 'post') {
            $database = 'postrate';
            $url = 'http://scratch.mit.edu/forums/viewtopic.php?pid=';
            $afterbit = '#p';
        }
        else {
            $database = 'topicrate';
            $url = 'http://scratch.mit.edu/forums/viewtopic.php?id=';
        }
    }
    mysql_connect($mysql_host, $mysql_user, $mysql_password) or die(mysql_error());
    mysql_select_db($mysql_database) or die(mysql_error());
    $query = mysql_query("SELECT * FROM $database");
    for($i=0;$i<mysql_num_rows($query);$i++) {
        $temp = mysql_fetch_row($query);
        $postids[$i] = $temp[0];
        $ips[$i] = count(explode(',', $temp[1])) . ',' . $i;
        $ipssort[$i] = $ips[$i];
    }
    rsort($ipssort, SORT_NUMERIC);
    for($i=0;$i<count($postids);$i++) {
        if($ips[$i] == $ipssort[$_REQUEST['rank']-1]) {
            $winnerpost = $postids[$i];
        }
    }
    if(!isset($ipssort[$_REQUEST['rank']-1])) {
        writetextimage('Error: Post with that', 'rank doesn\'t exist');
        exit();
    }
    if (!isset($afterbit)) {
        $headerurl = $url . $winnerpost;
        header("Location:$headerurl");
        exit();
    }
    else {
        $headerurl = $url . $winnerpost . $afterbit . $winnerpost;
        header("Location:$headerurl");
        exit();
    }
}
else {
    writetextimage('Error: incorrect URL vars used', 'Better luck next time!');
}
?>

[url=http://rookwood101.tk/topicrate.php?id=TOPIC ID HERE&ret=add][/url]

[url=http://rookwood101.tk/topicrate.php?id=TOPIC ID HERE&ret=add][img]http://rookwood101.tk/topicrate.php?id=TOPIC ID HERE&ret=image[/img][/url]

[url=http://rookwood101.tk/topicrate.php?id=POST ID HERE&ret=add&type=post][img]http://rookwood101.tk/topicrate.php?id=POST ID HERE&ret=image&type=post[/img][/url]

V1.0
First Release, allows you to add like buttons to forum topics and like them.

V1.1
Changed text size & Added redirect to topic
V1.5
Added unlike feature so that if you liked
something in the past you can change
your mind and take away the like also
added small text saying either like or
unlike to show you what would happen if
you clicked the link.
V1.5.1
Bug Fixes, such as now displays image of
Error messages and I had a couple of variables
set the wrong way round.
V1.6
Prettier like button, thanks LS97!
V1.6.1
Fixed a bug where people could like topics
even if they didn't exist also put the mysql
details in a seperate file along with a
variable that holds the string 'Bad request'
something or other.
V1.7
TBG support! add &forum=tbg to url for it
to work.
V1.7.1
Have it use Love-its instead of Likes put
&verb=love on the end of the img url to
make it work.
V1.8
Added first custom style requested by
IHeartGaming.
V2.0
Finally added Likeable posts! as requested
by LS97.
V2.1
Added blue colouring for posts, and white
colouring for topics
V2.1.1
Added Comp500's style request.
V3.0
Added Top liked list!
V3.0.1
Added Nathanprocks' style request
V3.1
Fixed Bug where if two posts had
the same amount of likes, they would
only use one id between them on the
ranks list.
V4
Basically a downgrade, new hosts
so it will work, basically get rid of
the scratchloveit.netne.net and
replace it with rookwood101.tk

 · Star Rating System (Seperate project)
 · Customisable Button-added requested one,
   need to make fully user customisable
 · Add Supporters list support using scratch
   login api.
 · Custom Button text (different to Like and Love)
 · Show rank of post/topic on like button
 · Stats