Convert captcha generator from PHP4 to PHP5 - captcha

Question

I have an old image captcha generator written in PHP4 that i need to convert to PHP5
Any suggestions for what I need to change to get it to start working? The main error I'm getting reads "Resource interpreted as Image but transferred with MIME type text/html" Which I already told it to have a MIME type of image throough the code below when I said header('Content-type: image/jpeg');
<?php
extract($HTTP_GET_VARS);
extract($HTTP_POST_VARS);
session_start();
$alphanum = "ABGKLMNPRSTUXZ";
$rand = substr(str_shuffle($alphanum), 0, 5);
$image = imagecreatetruecolor(65,25);
$background = imagecolorallocate($image, 255, 255, 255);
$border = imagecolorallocate($image, 128, 128, 128);
$colors[] = imagecolorallocate($image, 128, 64, 192);
$colors[] = imagecolorallocate($image, 192, 64, 128);
$colors[] = imagecolorallocate($image, 108, 192, 64);
imagefilledrectangle($image, 1, 1, 65 - 2, 25 - 2, $background);
imagerectangle($image, 0, 0, 65 - 1, 25 - 1, $border);
for ($i = 0; $i < 5; $i++){
$x1 = rand(0, 65 - 5);
$y1 = rand(0, 25 - 5);
$x2 = $x1 - 4 + rand(2, 8);
$y2 = $y1 - 4 + rand(2, 8);
imageline($image, $x1, $y1, $x2, $y2,$colors[rand(0, count($colors) - 1)]);
}
$textColor = imagecolorallocate ($image, 30, 30, 30);
imagestring ($image, 8, rand(8,10), rand(1,8), $rand, $textColor);
$_SESSION['image_random_value'] = md5($rand);
header("Expires: Mon, 26 Jul 1998 06:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header('Content-type: image/jpeg');
imagejpeg($image);
imagedestroy($image);
?>
This image loads into the page here if its at all helpful:
function textCounter(field, countfield, maxlimit) {
if (field.value.length > maxlimit)
field.value = field.value.substring(0, maxlimit);
else
countfield.value = maxlimit - field.value.length;
}
function form_visible(){
var el = document.getElementById('sf');
if(el.style.display == 'inline'){
el.style.display = 'none';
}else{
el.style.display = 'inline';
}
}
var shows = 0;
var lc;
var i;
var image;
var ny;
function show(star_img,rnid)
{
if (shows){
if(rnid==lc){
return;
}
}
for (i=1; i");
for (var i=1; i");
}
document.write("Please Select");
}
$value) {
${$key} = $value;
}
foreach($_POST AS $key => $value) {
${$key} = $value;
}
$db=mysql_connect($db_host,$database_user,$database_pass) or die("MySQL Error: Unable to connect to database please check that you have provided the correct Database Login usernameDatabase Login Password");
mysql_select_db($db_name,$db)or die("MySQL Error: Unable to select database please check that you have provided the correct Database name");
echo "";
$day =date("D d");
$month =date("M");
$year =date("Y");
$dt="$year-$month-$day";
$ent=mysql_query("SELECT * FROM ez_ccomment_opt");
$rowi=#mysql_fetch_array($ent);
if($do=="do_sign" && $id=="$mid"){
if ($comment !="" && $email !="" && $name !="" && $rating!=""){
if(md5($_POST['security']) == $_SESSION['image_random_value']){
$comment = str_replace ("","&gt", $comment);
$name = str_replace ("","&gt", $name);
$email = str_replace ("","&gt", $email);
$website = str_replace ("", $comment);
$comment = str_replace ("", "", $comment);
$name = stripslashes ($name);
$comment = stripslashes ($comment);
$lis="0";
if($rowi[filter]=="y"){
$user=file("badwords.txt");
for($x=0;$xPlease enter valid security image.";
}
}else{
$w="1";
echo "Please fill in the required fields.";}
}
ob_start();
echo "";
echo "Rating*";
?>
showform(1);
";
echo "Comments*
Name*
Email* (Will not be shown)
Security Image*make sure to type security image in ALL CAPITAL characters!
* = Required";
echo "";
ob_end_flush();
if($w=="1"){
?>
var el = document.getElementById('sf');
el.style.display = 'inline';
";
$list = ("SELECT * FROM ez_ccomment WHERE status='confirmed' AND ccid='$id' ORDER BY op DESC");
$row_num1= #mysql_num_rows(mysql_query($list));
$list_per_page=$rowi['limit_pp'];
if($row_num1>0){
echo "Comments";
}else{
echo "No ratings yet. Be the first to add a rating!";
}
if($start==""){
$start=1;
}
if($start==""||$start==1){
$sfrom=0;
}else{
$sfrom=(($start-1)*$list_per_page);
}
$end=$list_per_page;
$gr=0;
$list.= (" LIMIT $sfrom,$end");
$blist=(mysql_query($list));
while($row=#mysql_fetch_array($blist)){
if(substr_count($row[email],"#")==1){
$name="$row[name]";
}else{
$name="$row[name]";
}
$messag=$row[message];
$messag=wordwrap($messag, 55, "\n", 1);
$row[rating]=round($row[rating],2);
if ($row[rating] == 5)
{
$star = "images/5star.gif" ;
$pk="5 - Excellent!";
}
if ($row[rating]>=1 && $row[rating]=2 && $row[rating]=3 && $row[rating]= 4 && $row[rating]= 5)
{
$star = "images/5star.gif" ;
$pk="5 - Excellent!";
}
if ($row[rating] $messag$row[name], $row[date]";
$gr+=1;
}
$list_per_page=$rowi['limit_pp'];
echo "";
if($start==""){
$start=1;
}
if($start==""||$start==1){
$sfrom=0;
}else{
$sfrom=(($start-1)*$list_per_page);
}
$end=$list_per_page;
if ($row_num1>$list_per_page){
$no_of_page=$row_num1/$list_per_page;
$no_page=explode(".",$no_of_page);
if($no_page[1]>0){
$no_of_page+=1;
}
echo "";
echo "";
if($start > 1){
$s=$start-1;
echo "Previous";
}
echo "";
$last=round($no_of_page,0);
for($i=1;$i$i ";
}else{
echo " $i ";
}
}else{
if($i>$start+3){
if($once==""){
echo " ....... $last";
}
$once="yes";
}elseif($i0){
echo "1 ....... ";
}
$tonce="yes";
}else{
if($i!=$start){
echo " $i ";
}else{
echo " $i ";
}
}
}
}
echo "";
if($start Next";
}elseif($start>=$i){
$next = "";
}
echo "$next";
}
echo "";
?>

Answer 1

In that code, just change $HTTP_GET_VARS for $_GET and $HTTP_POST_VARS for $_POST
extract($_GET);
extract($_POST);
I tried it and it works.