garbadge code (that works)

<?php
$ResultCode="OK";

$type = 0;
if(isset($_GET["c"]))
{
    if(is_numeric($_GET["c"]))
    {
        $type = (int)$_GET["c"];
    }
}


function startsWith ($string, $startString)
{
    $len = strlen($startString);
    if(substr($string, 0, $len) === $startString)
    {
        return true;
    }
    else
    {
        return false;
    }
}

function read_ini_value(string $ini, string $category, string $key)
{
    $stats = fopen($ini, "r");


    do{
        $line = fgets($stats);
        if(feof($stats))
        {
            fclose($stats);
            return false;
        }
    }
    while($line != "[".$category."]\n");

    do{
        $line = fgets($stats);

        if(startsWith($line,"["))
        {
            fclose($stats);
            return "";
        }
        if(feof($stats))
        {
            fclose($stats);
            return "";
        }
    }
    while(!startsWith($line,$key));
    $values = explode("=",$line);
    fclose($stats);

    return str_replace("\n","",$values[1]);
}

function write_ini_value(string $ini, string $category, string $key, string $value)
{
    $sz = filesize($ini);
    $stats = fopen($ini, "r+");


    do{
        $line = fgets($stats);
        if(feof($stats))
        {
            fclose($stats);
            return false;
        }
    }
    while($line != "[".$category."]\n");

    do{
        $line = fgets($stats);

        if(startsWith($line,"["))
        {
            fclose($stats);
            return false;
        }
        if(feof($stats))
        {
            fclose($stats);
            return false;
        }
    }
    while(!startsWith($line,$key));

    $curPos = ftell($stats);

    $remaining = $sz - $curPos;
    $after = fread($stats,$remaining);

    $nextPos = $curPos-strlen($line);

    fseek($stats,$nextPos,SEEK_SET);
    fwrite($stats,$key."=".$value."\n");
    fwrite($stats,$after);

    fclose($stats);
    return true;
}

function get_poll_result(string $country)
{
    //Get Total Vote Count
    $TotalVotes = 0;
    for($i = 1; $i<=6; $i++)
    {
        $TotalVotes += (int)read_ini_value("stats.ini",$country,$i);
    }

    $WWAnswer = "";
    for($i = 1; $i<=6; $i++)
    {
        $WWA = (int)read_ini_value("stats.ini",$country,$i);
        if($WWA != 0 || $TotalVotes != 0)
        {
            $WWA = (int)floor(($WWA / $TotalVotes)*100);
        }
        $WWAnswer .= (string)$i."_".(string)$WWA;
        if($i != 6)
        {
            $WWAnswer .= ",";
        }
    }
    return $WWAnswer;
}
switch($type)
{
    case 5: //survey entry
    $country = "";
    $key = 0;
    $character = 0;

    //Read "f"
    if(isset($_GET["f"]))
    {
        if(is_string($_GET["f"]))
        {
            $country = $_GET["f"];
        }
        else
        {
            $ResultCode="ERROR";
            break;
        }
    }
    else
    {
        $ResultCode="ERROR";
        break;
    }

    //Read "e"
    if(isset($_GET["e"]))
    {
        if(is_numeric($_GET["e"]))
        {
            $key = (int)$_GET["e"];
        }
        else
        {
            $ResultCode="ERROR";
            break;
        }
    }
    else
    {
        $ResultCode="ERROR";
        break;
    }

    //Read "a"
    if(isset($_GET["a"]))
    {
        if(is_numeric($_GET["a"]))
        {
            $character = $_GET["a"];
        }
        else
        {
            $ResultCode="ERROR";
            break;
        }
    }
    else
    {
        $ResultCode="ERROR";
        break;
    }

    // Sanitize user input (no exploit for u)
    if($character < 1 || $character > 6)
    {
        $ResultCode="ERROR";
        break;
    }
    if($key != 2)
    {
        $ResultCode="ERROR";
        break;
    }
    if(!($country == "NA" || $country == "EU" || $country == "JP" || $country == "AO"))
    {
        $ResultCode="ERROR";
        break;
    }

    // Write new statistics (finally)
    if(!file_exists("stats.ini")) //initalize
    {
        $stats = fopen("stats.ini", "w+");
        fwrite($stats,"[JP]\n");
        for($i = 1;$i<=6;$i++)
        {
            fwrite($stats,(string)$i."=0\n");
        }

        fwrite($stats,"[NA]\n");
        for($i = 1;$i<=6;$i++)
        {
            fwrite($stats,(string)$i."=0\n");
        }

        fwrite($stats,"[EU]\n");
        for($i = 1;$i<=6;$i++)
        {
            fwrite($stats,(string)$i."=0\n");
        }

        fwrite($stats,"[AO]\n");
        for($i = 1;$i<=6;$i++)
        {
            fwrite($stats,(string)$i."=0\n");
        }
        fclose($stats);
    }

    $value = read_ini_value("stats.ini",$country,(string)$character);
    if($value == "")
    {
        error_log("Read_Ini_Failed!".$country.$character);
        $ResultCode="ERROR";
        break;
    }
    $newVal = (int)$value+1;
    $ret = write_ini_value("stats.ini",$country,(string)$character,(string)$newVal);
    if($ret == false)
    {
        error_log("Write_Ini_Failed!");
        $ResultCode="ERROR";
        break;
    }

    //Get Poll Results
    $JPAnswer = get_poll_result("JP");
    $NAAnswer = get_poll_result("NA");
    $EUAnswer = get_poll_result("EU");
    $AOAnswer = get_poll_result("AO");

    break;

    default: //unimplemented - just say success
    $ResultCode="OK";
    break;
}



$output= Array(
    "ResultCode" => $ResultCode
);
if(isset($JPAnswer))
{
    $output["JPAnswer"] = $JPAnswer;
}
if(isset($NAAnswer))
{
    $output["NAAnswer"] = $NAAnswer;
}
if(isset($EUAnswer))
{
    $output["EUAnswer"] = $EUAnswer;
}
if(isset($AOAnswer))
{
    $output["AOAnswer"] = $AOAnswer;
}

echo(urldecode(http_build_query($output)));


?>