PHP Basic Code/Coupon Generator

The first thing you should do is change the password, you can access the code/coupon adder by using it as a get variable (e.g http://exa.mp/gen.php?somepassword).The password feature is commented out but you should be able to uncomment it out and add a new password. This script includes:

• Basic Captcha
• IP Checker
• File Protection
• String Customization

I wrote it in a rush so its still pretty messy but it works.

Code:

<?php
//Sands Code Generator

//$password = "somepassword";
$text = ["Coin Code","Generator","Generate Code","You already got a code!","Here is your code: ","Sorry but we are out of stock!","Incorrect Captcha!"];

$special_key = "l02";

$direc = scandir(dirname(__FILE__));
$product_name = $text[0];
for ($i = 0; $i <= count($direc); $i++) {
$val = $direc[$i];
if (strpos($val,$special_key.'.txt') !== false) {
$codes = file($val);
$codes_path = $val;
} else if (strpos($val,$special_key.'.ips') !== false) {
$ips = file($val);
$ips_path = $val;
}
}

//Basic Captcha by Sand
function generateRandomString($length = 10) {
$characters = '123456789abcdefghijkLmnop';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}

function LoadGif($imgname,$captcha) {
$im = @imagecreatefromgif($imgname);
if(!$im) {
$im = imagecreatetruecolor (60, 30);
$bgc = imagecolorallocate ($im, rand(100,255), rand(100,255), rand(100,255));
$tc = imagecolorallocate ($im, rand(0,100), rand(0,100), rand(0,100));
imagefilledrectangle ($im, 0, 0, 60, 30, $bgc);
for ($i = 1; $i <= 100; $i++) {
$ta = imagecolorallocate ($im, rand(100,255), rand(100,255), rand(100,255));
imagestring ($im, 1, rand(0,50), rand(0,20), generateRandomString(10), $ta);
}
imagestring ($im, 20, 5, 5, $captcha, $tc);
}
return $im;
}

function captchy(){
$captcha = $_POST['captchy'];
$file = file("captcha.txt");
if(isset($captcha)){
$hash = md5($_SERVER['REMOTE_ADDR'].":".$captcha)."\n";
if (in_array($hash, $file)) {
return true;
} else {
return false;
}
}
}

function newCaptchy() {
$captcha = generateRandomString(6);
$img = LoadGif('image.gif',$captcha);
$file = "captcha.txt";
if(count(file($file))>=5){
file_put_contents($file,preg_replace('/^.+\n/', '', file_get_contents($file)));
}
ob_start();
imagegif($img);
$imagedata = ob_get_contents();
ob_end_clean();
$hash = md5($_SERVER['REMOTE_ADDR'].":".$captcha);
file_put_contents($file,file_get_contents($file).$hash."\n");
$base64 = 'data:image/gif;base64,'.base64_encode($imagedata);
echo "<input style='background:transparent;border:2px solid transparent;border-radius:8px;vertical-align:top;line-height:30px;width:45;' maxlength='6' autocomplete='off' type='text' name='captchy' placeholder='Solve it'/><img style='border:3px solid white;border-radius:8px;' src='".$base64."'><p>";
imagedestroy($img);
}
//Basic Captcha End

$submit = $_POST['code-submit'];
$passset = $_GET[$password];
if(empty($codes_path)){
$passset = true;
}

if(isset($passset)){
if (isset($_SERVER['HTTP_USER_AGENT'])){
@$codes_text = file_get_contents($codes_path);
$text = "<h3>Edit Codes</h3><p><form action='' method='POST' autocomplete='off'>Codes:<br><textarea autocomplete='off' placeholder='Paste your codes in here' type='text' name='codes' id='".rand(0,99999999999999)."' cols='40' rows='10'>".$codes_text."</textarea><br><input type='submit' value='Add Codes' name='code-submit' /></form>";
if(empty($submit)){
echo $text;
die();
} else {
file_put_contents("captcha.txt","");
if (empty($codes_path)){
file_put_contents(md5(rand(0,99999)).$special_key.".txt",$_POST['codes']);
} else {
file_put_contents($codes_path,$_POST['codes']);
}
if(empty($ips_path)){
file_put_contents(md5(rand(0,99999)).$special_key.".ips","");
}
echo "Codes Added!<p>";
$title = $product_name." Generator";
}
}
} else {
$title = $product_name." ".$text[1];
}

if (isset($_SERVER['HTTP_USER_AGENT'])){

echo "<title>".$title."</title>";
echo "<font size=5>".$title."</font>";
echo "<form action='' method='POST'>";
newCaptchy();
?><style>.generate {-moz-box-shadow:inset 0px 1px 0px -4px #ffffff;-webkit-box-shadow:inset 0px 1px 0px -4px #ffffff;box-shadow:inset 0px 1px 0px -4px #ffffff;background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #f9f9f9), color-stop(1, #e9e9e9));background:-moz-linear-gradient(top, #f9f9f9 5%, #e9e9e9 100%);background:-webkit-linear-gradient(top, #f9f9f9 5%, #e9e9e9 100%);background:-o-linear-gradient(top, #f9f9f9 5%, #e9e9e9 100%);background:-ms-linear-gradient(top, #f9f9f9 5%, #e9e9e9 100%);background:linear-gradient(to bottom, #f9f9f9 5%, #e9e9e9 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f9f9f9', endColorstr='#e9e9e9',GradientType=0);background-color:#f9f9f9;-moz-border-radius:42px;-webkit-border-radius:42px;border-radius:42px;border:1px solid #dcdcdc;display:inline-block;cursor:pointer;color:#666666;font-family:Arial;font-size:10px;height:18px;font-weight:bold;padding:0px 11px;text-decoration:none;text-shadow:0px 0px 0px #ffffff;}.generate:hover {background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #e9e9e9), color-stop(1, #f9f9f9));background:-moz-linear-gradient(top, #e9e9e9 5%, #f9f9f9 100%);background:-webkit-linear-gradient(top, #e9e9e9 5%, #f9f9f9 100%);background:-o-linear-gradient(top, #e9e9e9 5%, #f9f9f9 100%);background:-ms-linear-gradient(top, #e9e9e9 5%, #f9f9f9 100%);background:linear-gradient(to bottom, #e9e9e9 5%, #f9f9f9 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#e9e9e9', endColorstr='#f9f9f9',GradientType=0);background-color:#e9e9e9;}.generate:active {position:relative;top:1px;}</style><input type="submit" name='generate' class="generate" value="Generate"/><?php
echo "</form>";

if(isset($_POST['generate'])){if(captchy()){
if(in_array($_SERVER['REMOTE_ADDR']."\n",$ips)){
die("<font color='red' size='2'>".$text[3]."</font>");
} else {
$ips_val = file_get_contents($ips_path);
file_put_contents($ips_path,$ips_val.$_SERVER['REMOTE_ADDR']."\n");
if(empty($codes)){
die("<font color='red' size='2'>".$text[5]."</font>");
}
$client_code = $codes[rand(0,count($codes))];
$codes_val = str_replace($client_code,"",file_get_contents($codes_path));
file_put_contents($codes_path,$codes_val);
echo "<font size='2' color='lime'>".$text[4]."</font><font size='2'>".$client_code;
}
} else {
echo "<font color='red' size='2'>".$text[6];
}}
echo "</font></div>";
}
?>