این کد کپچاست :
<?php
session_start();
function random_string($len=5, $str='')
{ for($i=1; $i<=$len; $i++ )
{ //generates a random number that will be the ASCII code of the character.
//We only want numbers (ascii code from 48 to 57) and caps letters.
$ord=rand(48, 90);
if((($ord >= 48) && ($ord <= 57)) || (($ord >= 65) && ($ord<= 90)))
$str.=chr($ord); //If the number is not good we generate another one
else
$str.=random_string(1);
} return $str;}
//create the random string using the upper function
//(if you want more than 5 characters just modify the parameter)
$rand_str=random_string(5);
// جدا کردن رشته به صورت 5 کاراکتر
$letter1=substr($rand_str,0,1);
$letter2=substr($rand_str,1,1);
$letter3=substr($rand_str,2,1);
$letter4=substr($rand_str,3,1);
$letter5=substr($rand_str,4,1);
//Creates an image from a png file. If you want to use gif or jpg images,
//just use the coresponding functions: imagecreatefromjpeg and imagecreatefromgif.
$image=imagecreatefrompng("images/verify.png");
//Get a random angle for each letter to be rotated with.
// تعیین زاویه نمایش کاراکترها
$angle1 = rand(-30, 30);
$angle2 = rand(-30, 30);
$angle3 = rand(-30, 30);
$angle4 = rand(-30, 30);
$angle5 = rand(-30, 30);
//Get a random font. (In this examples, the fonts are located in "fonts" directory and named from 1.ttf to 10.ttf)
// تعیین فونت برای نمایش هر یک از کاراکترها
$font1 = 'font/'.rand(1,5).'.ttf';
$font2 = 'font/'.rand(1,5).'.ttf';
$font3 = 'font/'.rand(1,5).'.ttf';
$font4 = 'font/'.rand(1,5).'.ttf';
$font5 = 'font/'.rand(1,5).'.ttf';
//Define a table with colors (the values are the RGB components for each color).
//Get a random color for each letter.
// تعیین رنگ برای هر یک از کاراکتر ها
$color1=rand(0,255);
$color2=rand(0,255);
$color3=rand(0,255);
$color4=rand(0,255);
$color5=rand(0,255);
//Allocate colors for letters.
$textColor1 = imagecolorallocate ($image, $color1,10, $color3);
$textColor2 = imagecolorallocate ($image, $color4,40, $color2);
$textColor3 = imagecolorallocate ($image, $color2,60, $color1);
$textColor4 = imagecolorallocate ($image, $color3,110, $color5);
$textColor5 = imagecolorallocate ($image, $color5,120, $color4);
//Write text to the image using TrueType fonts.
// تعیین سایز برای هر یک از کاراکترها
$size1 = rand(17,23);
$size2 = rand(17,23);
$size3 = rand(17,23);
$size4 = rand(17,23);
$size5 = rand(17,23);
// تعیین موقعیت نمایش برای هر کدام از کاراکترها
$y_pos1 = rand(27,40);
$y_pos2 = rand(27,40);
$y_pos3 = rand(27,40);
$y_pos4 = rand(27,40);
$y_pos5 = rand(27,40);
imagettftext($image, $size1, $angle1, 12, $y_pos1, $textColor1, $font1, $letter1);
imagettftext($image, $size2, $angle2, 40, $y_pos2, $textColor2, $font2, $letter2);
imagettftext($image, $size3, $angle3, 70, $y_pos3, $textColor3, $font3, $letter3);
imagettftext($image, $size4, $angle4, 100, $y_pos4, $textColor4, $font4, $letter4);
imagettftext($image, $size5, $angle5, 130, $y_pos5, $textColor5, $font5, $letter5);
$_SESSION['image_verification'] = $rand_str;
header('Content-type: image/png');
//Output image to browser
//imagejpeg($image);
imagepng($image);
//Destroys the
imagedestroy($image);
?>
اینم کد صفحه:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>پروفایل مدیریت</title>
<link href="css/head.css" rel="stylesheet" type="text/css" />
<link href="../../SpryAssets/SpryValidationPassword.css" rel="stylesheet" type="text/css" />
<link href="../../SpryAssets/SpryValidationTextField.css" rel="stylesheet" type="text/css" />
<link href="../../SpryAssets/SpryValidationConfirm.css" rel="stylesheet" type="text/css" />
<script src="../../SpryAssets/SpryValidationPassword.js" type="text/javascript"></script>
<script src="../../SpryAssets/SpryValidationTextField.js" type="text/javascript"></script>
<script src="../../SpryAssets/SpryValidationConfirm.js" type="text/javascript"></script>
</head>
<body>
<div class="head">
<span>
</span>
</div>
<div align="center">
<div class="divmenu">
<table border="0">
<tr>
<td width="128">پروفایل مدیریت</td>
</tr>
<tr>
<td>مدیریت کاربران</td>
</tr>
<tr>
<td>وضعیت فروش </td>
</tr>
<tr>
<td>مدیریت منو ها</td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td>اضافه کردن صفحه</td>
</tr>
<tr>
<td>تنظیمات کتاب</td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td>تنظیمات سایت</td>
</tr>
<tr>
<td>مسدود کردن سایت</td>
</tr>
<tr>
<td>راهنما</td>
</tr>
<tr>
<td>تنضیمات سرور</td>
</tr>
<tr>
<td>نمایش سایت</td>
</tr>
<tr>
<td>خروج</td>
</tr>
</table>
</div>
<div class="divrightmanager">
<form method="post" action="<?php $_SERVER['HTTP_HOST'] ?>" >
<div align="left">
<fieldset style="text-align:left; width:350px"><legend >مشخصات مدیر</legend>
<p><label for="fullname">نام:</label>
<input type="text" name="fullname " id="fullname" class="txt" />
</p>
<p>
<label for="lastname">نام خانوادگی : </label>
<input type="text" name="lastname " id="lastname" class="txt" />
</p>
<p>
<label for="tel">تلفن: </label>
<input type="text" name="tel " id="tel" class="txt" />
</p>
<p>
<label for="address">آدرس :</label>
<input type="text" name="address " id="address" class="txt" />
</p>
<p> <label for="fax">فکس :</label>
<input type="text" name="fax" id="fax" class="txt" />
</p>
<p>
<label for="lastname">تلفکس :</label>
<input type="text" name="telfax" id="telfax" class="txt" />
</p>
<p>
<label for="email">ایمیل:</label>
<input type="text" name="email" id="email" class="txt" />
</p>
<p>
<input name=" managersave" type="submit" value="ذخیره تغییرات"/>
</p>
</fieldset>
</div>
</form>
<form method="post" action="">
<div align="right" style="position: absolute; top: 1px; left: 386px; width: 519px; height: 319px;">
<fieldset style="text-align: left; width: 532px; position: absolute; left: 10px; top: 2px; height: 334px;"><legend >تغییر رمز</legend>
<p>
<span id="sprytextfield1">
<label for="name">نام کاربری:</label>
<input type="text" name="text1" id="text1" class="txt" />
<span class="textfieldRequiredMsg">نام کاربری را وارد کنید</span></span>
</p>
<p>
<span id="sprypassword1">
<label for="password1">رمز قبلی : </label>
<input type="password" name="password1" id="password1" class="txt" />
<span class="passwordRequiredMsg">لظفا رمز را وارد نمایید</span></span>
</p>
<p>
<label for="newpass">رمز جدید: </label>
<input type="text" name="newpass " id="newpass" class="txt" />
</p>
<p>
<label for="re-pass">تکرار رمز جدید :</label>
<span id="spryconfirm1">
<input type="text" name="re-pass " id="re-pass" class="txt" />
<span class="confirmRequiredMsg">پسورد صحیح نیست</span><span class="confirmInvalidMsg">The values don't match.</span></span></p>
<p>
<label for="captcha"> <?php echo "<a href=managerprofile.php>بازسازی</a><br>\n"; ?> </label>
<?php
require_once("captcha.php");
?>
</p>
<p>
<label for="captcha"> کد تصویر :</label>
<input type="text" name="captcha" id="captcha" class="txt" />
</p>
<p>
</p>
</fieldset>
<input name="savepass" type="submit" class="btn" value="دخیره تغییرات" />
</div>
</form>
</div>
<script type="text/javascript">
var sprypassword1 = new Spry.Widget.ValidationPassword("sprypassword1", {validateOn:["blur", "change"]});
var sprytextfield1 = new Spry.Widget.ValidationTextField("sprytextfield1", "none", {validateOn:["blur", "change"]});
var spryconfirm1 = new Spry.Widget.ValidationConfirm("spryconfirm1", "newpass", {validateOn:["blur", "change"]});
</script>
</body>
</html>