View file captcha.php

<?php
//***********************************************//
//        HwapCms - бесплатная wap CMS           //
//            Автор: wap_masterok                //
//             Официальный сайт                  //
//             http://wap-help.ru                //
//                                               //
//***********************************************//

session_start (); 
$_SESSION [ 'code' ]=(string) substr ( str_shuffle  ( 'QWERTYUIPASDFGHJKLZ XCVBNM 123456789 ' ), rand ( 0 , 30 ), 4 ); 
$thiz = ImageCreate ( 72 , 30 );  // Размер изображения 
imagecolortransparent ( $thiz , imagecolorallocate  ( $thiz , 0xff , 0xff , 0xff ));  // Прозрачный фон 
function  imagekub ( $thiz , $size , $i1 , $niz1 , $chr = NULL ) {  $color1 = imagecolorallocate ( $thiz ,( $l1 = rand  ( 150 , 200 )),( $l2 = rand ( 150 , 200 )),( $l3 = rand ( 150 , 200 ))); 
$color2 = imagecolorallocate ( $thiz ,( $l1 - 50 ),( $l2 - 50 ),( $l3 - 50 )); 
$color3 = imagecolorallocate ( $thiz ,( $l1 - 100 ), ( $l2 - 100 ),( $l3 - 100 )); 
$color4 = imagecolorallocate ( $thiz ,( $l1 + 55 ), ( $l2 + 55 ),( $l3 + 55 )); 
$niz3 = $niz1 ; 
$niz2 =( $niz1 +( $b =( 12 + $size ))); 
$i2 = $i1 +( 12 + $size ); 
do {  imageline ( $thiz , $i2 , (++ $niz3 ), $i1 , $niz3 , $color2 ); -- $b ; 
} 
while( $b > 1 ); 
imageline ( $thiz , $i2 , $niz1 , $i1 , $niz1 , $color1 ); 
imageline ( $thiz , $i1 , $niz2 , $i1 , $niz1 , $color1 ); 
imageline ( $thiz , $i2 , $niz1 , $i2 , $niz2 , $color3 ); 
imageline ( $thiz , $i2 , $niz2 , $i1 , $niz2 , $color3 ); 
if( $chr !== NULL ) {  imagechar ( $thiz , $size , $i1 + 5 ,( $niz1 + ( $size < 1 ? 4 :( $size < 2 ? 3 : 2 ))), $chr , $color3 ); 
imagechar ( $thiz , $size , $i1 + 4 ,( $niz1 + ( $size < 1 ? 3 :( $size < 2 ? 2 : 1 ))), $chr , $color4 ); } return; } 
for( $i = 0 ; 
$i < 20 ; ++ $i )  imagekub ( $thiz , rand ( 0 , 2 ), rand ( 0 , 56 ), rand  ( 0 , 14 ), '?' ); 
$o =- 1 ; 
for( $i = 1 ; 
$i <= 57 ; 
$i += 18 )  imagekub ( $thiz , rand ( 2 , 4 ), $i , rand ( 0 , 14 ), substr  ( $_SESSION [ 'code' ],(++ $o ))); 
ob_start (); 
ImageGif ( $thiz ); 
ImageDestroy ( $thiz ); 
header ( "Content-Type: image/gif" ); 
header ( 'Content- Disposition: inline; filename=code.gif' ); 
header ( 'Content-Length: ' . ob_get_length ()); 
ob_end_flush (); 

?>