ck.php

很好的一套PHP树形论坛程序

<?php
error_reporting(0);

define('D_P',__FILE__ ? substr(__FILE__,0,-6) : './');
define('R_P',D_P);

$timestamp=time();
$x_size=60;
$y_size=20;
$nmsg=num_rand(4);
require_once(D_P.'data/bbscache/config.php');
$db_cvtime != 0 && $timestamp += $db_cvtime*60;
if($_GET['admin']){
	$db_ckpath='/';
	$db_ckdomain='';
}
Cookie('cknum',StrCode($timestamp."\t\t".md5($nmsg.$timestamp)));

if(function_exists('imagecreate') && function_exists('imagecolorallocate') && function_exists('imagepng') &&
function_exists('imagesetpixel') && function_exists('imageString') && function_exists('imagedestroy') && function_exists('imagefilledrectangle') && function_exists('imagerectangle')){
	$aimg = imagecreate($x_size,$y_size);
	$back = imagecolorallocate($aimg, 255, 255, 255);
	$border = imagecolorallocate($aimg, 0, 0, 0);
	imagefilledrectangle($aimg, 0, 0, $x_size - 1, $y_size - 1, $back);
	imagerectangle($aimg, 0, 0, $x_size - 1, $y_size - 1, $border);

	 for($i=1; $i<=60;$i++){
		//$dot = imagecolorallocate($aimg,mt_rand(50,255),mt_rand(50,255),mt_rand(50,255));
		//imagesetpixel($aimg,mt_rand(1,$x_size-1), mt_rand(1,$y_size-1),$dot);
		imageString($aimg,1,$i*$x_size/10+mt_rand(1,5),mt_rand(1,15),'*',imageColorAllocate($aimg,mt_rand(50,255),mt_rand(50,255),mt_rand(50,255)));
    }

	for ($i=0;$i<strlen($nmsg);$i++){ 
		imageString($aimg,mt_rand(3,5),$i*$x_size/4+mt_rand(1,5),mt_rand(1,6),$nmsg[$i],imageColorAllocate($aimg,mt_rand(50,255),mt_rand(0,120),mt_rand(50,255)));
	}
	header("Pragma:no-cache");
	header("Cache-control:no-cache");
	header("Content-type: image/png");
	imagepng($aimg);
	imagedestroy($aimg);
	exit;
} else{
	header("Pragma:no-cache");
	header("Cache-control:no-cache");
	header("ContentType: Image/BMP");

	$Color[0] = chr(0).chr(0).chr(0);
	$Color[1] = chr(255).chr(255).chr(255);
	$_Num[0]  = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111";
	$_Num[1]  = "1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111";
	$_Num[2]  = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011";
	$_Num[3]  = "1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111";
	$_Num[4]  = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011";
	$_Num[5]  = "1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111";
	$_Num[6]  = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111";
	$_Num[7]  = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111";
	$_Num[8]  = "1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111";
	$_Num[9]  = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111";

	echo chr(66).chr(77).chr(230).chr(4).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(54).chr(0).chr(0).chr(0).chr(40).chr(0).chr(0).chr(0).chr(40).chr(0).chr(0).chr(0).chr(10).chr(0).chr(0).chr(0).chr(1).chr(0);
	echo chr(24).chr(0).chr(0).chr(0).chr(0).chr(0).chr(176).chr(4).chr(0).chr(0).chr(18).chr(11).chr(0).chr(0).chr(18).chr(11).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0);

	for ($i=9;$i>=0;$i--){
		for ($j=0;$j<=3;$j++){
			for ($k=1;$k<=10;$k++){
				$dot=substr($_Num[$nmsg[$j]],$i * 10 + $k,1);
				if(mt_rand(0,7)<1){
					echo $Color[mt_rand(0,1)];
				}else{
					echo $Color[$dot];
				}
				//echo $Color[substr($_Num[$nmsg[$j]], $i * 10 + $k, 1)];
			}
		}
	}
	exit;
}

function num_rand($lenth){
	mt_srand((double)microtime() * 1000000);
	for($i=0;$i<$lenth;$i++){
		$randval.= mt_rand(1,9);
	}
	return $randval;
}
function StrCode($string,$action='ENCODE'){
	$key	= substr(md5($_SERVER["HTTP_USER_AGENT"].$GLOBALS['db_hash']),8,18);
	$string	= $action == 'ENCODE' ? $string : base64_decode($string);
	$len	= strlen($key);
	$code	= '';
	for($i=0; $i<strlen($string); $i++){
		$k		= $i % $len;
		$code  .= $string[$i] ^ $key[$k];
	}
	$code = $action == 'DECODE' ? $code : base64_encode($code);
	return $code;
}
function Cookie($ck_Var,$ck_Value,$ck_Time = 'F'){
	global $db_ckpath,$db_ckdomain,$timestamp;
	$ck_Time = $ck_Time == 'F' ? $timestamp + 31536000 : ($ck_Value == '' && $ck_Time == 0 ? $timestamp - 31536000 : $ck_Time);
	$S		 = $_SERVER['SERVER_PORT'] == '443' ? 1:0;
	!$db_ckpath && $db_ckpath = '/';
	setCookie($ck_Var,$ck_Value,$ck_Time,$db_ckpath,$db_ckdomain,$S);
}
?>