<?
include("../class/config.php");
include("../class/connect.php");
//取得随机数
function domake_password($pw_length){
	$low_ascii_bound=48;
	$upper_ascii_bound=57;
	$notuse=array(58,59,60,61,62,63,64,73,79,91,92,93,94,95,96,108,111);
	while($i<$pw_length)
	{
		mt_srand((double)microtime()*1000000);
		$randnum=mt_rand($low_ascii_bound,$upper_ascii_bound);
		if(!in_array($randnum,$notuse))
		{
			$password1=$password1.chr($randnum);
			$i++;
		}
	}
	return $password1;
}
//显示验证码
function ShowKey(){
	$key=strtolower(domake_password(4));
	$set=esetcookie("checkkey",$key);
	//是否支持gd库
	if (function_exists("imagejpeg")) {
	header ("Content-type: image/jpeg");
	$img=imagecreate(69,20);
	$black=imagecolorallocate($img,255,255,255);
	$gray=imagecolorallocate($img,102,102,102);
	imagefill($img,0,0,$gray);
	imagestring($img,3,14,3,$key,$black);
	imagejpeg($img);
	imagedestroy($img);
	}
	elseif (function_exists("imagegif")) {
	header ("Content-type: image/gif");
	$img=imagecreate(69,20);
	$black=imagecolorallocate($img,255,255,255);
	$gray=imagecolorallocate($img,102,102,102);
	imagefill($img,0,0,$gray);
	imagestring($img,3,14,3,$key,$black);
	imagegif($img);
	imagedestroy($img);
	}
	elseif (function_exists("imagepng")) {
	header ("Content-type: image/png");
	$img=imagecreate(69,20);
	$black=imagecolorallocate($img,255,255,255);
	$gray=imagecolorallocate($img,102,102,102);
	imagefill($img,0,0,$gray);
	imagestring($img,3,14,3,$key,$black);
	imagepng($img);
	imagedestroy($img);
	}
	elseif (function_exists("imagewbmp")) {
	header ("Content-type: image/vnd.wap.wbmp");
	$img=imagecreate(69,20);
	$black=imagecolorallocate($img,255,255,255);
	$gray=imagecolorallocate($img,102,102,102);
	imagefill($img,0,0,$gray);
	imagestring($img,3,14,3,$key,$black);
	imagewbmp($img);
	imagedestroy($img);
	}
	else {
	$set=esetcookie("checkkey","ecms");
	include("../class/functions.php");
	echo ReadFiletext("../data/images/ecms.jpg");
	}
}
ShowKey();
?>