<?php
session_start();
// img.jpg should be 75x35pixels in size...
$RandomStr = md5(microtime());// md5 to generate the random string
$ResultStr = substr($RandomStr,0,5);//trim 5 digit
$img=rand(1,7);
$NewImage =imagecreatefromjpeg("images/$img.jpg");//image create by existing image and as back ground
$LineColor = imagecolorallocate($NewImage, 117,195,13);//line color
$LineColor2 = imagecolorallocate($NewImage, 85,216,23);//line color
$TextColor = imagecolorallocate($NewImage, rand(180,220), rand(150,180), rand(200,240));//text color-white 200 replaced with rand
imageline($NewImage,1,1,40,40,$LineColor);//create line 1 on image
imageline($NewImage,1,100,60,0,$LineColor);//create line 2 on image
imageline($NewImage,35,1,75,20,$LineColor2);//create line 3 on image
imageline($NewImage,1,15,75,5,$LineColor2);//create line 4 on image
for ($i = 0; $i <= 256; $i++) {
$point_color = imagecolorallocate ($NewImage, rand(0,255), rand(0,255), rand(0,255));
imagesetpixel($NewImage, rand(2,75), rand(2,35), $point_color);
}
$str_array=array();
$len=strlen($ResultStr);
for($i=0;$i<$len;$i++) $str_array[]=$ResultStr{$i};
imagestring($NewImage, rand(3,5), rand(2,10), rand(2,21), $str_array[0], $TextColor);// Draw a random string horizontally
imagestring($NewImage, rand(3,5), rand(18,25), rand(8,21), $str_array[1], $TextColor);// Draw a random string horizontally
imagestring($NewImage, rand(3,5), rand(33,40), rand(2,11), $str_array[2], $TextColor);// Draw a random string horizontally
imagestring($NewImage, rand(4,5), rand(47,55), rand(5,21), $str_array[3], $TextColor);// Draw a random string horizontally
imagestring($NewImage, rand(3,5), rand(61,66), rand(14,21), $str_array[4], $TextColor);// Draw a random string horizontally
$_SESSION['key'] = $ResultStr;// carry the data through session
header("Content-type: image/jpeg");// out out the image
imagejpeg($NewImage);//Output image to browser
?>
