php记录来访者的相关信息并生成图片，效果图如下。

代码如下，本篇文章只写了一些初级的东西，有需要的朋友可以根据自己的情况进行修改。

<?php

//功能：来访信息生成图片

function getBrowse(){//记录来访者的浏览器信息

global $_SERVER;

$Agent=$_SERVER['HTTP_USER_AGENT'];

$browseinfo='';

if(ereg('Mozilla',$Agent)&&!ereg('MSIE',$Agent)){
$browseinfo='Netscape Navigator';

}

if(ereg('Opera',$Agent)){

$browseinfo='Opera';

}

if(ereg('Mozilla',$Agent)&&ereg('MSIE',$Agent)){
$browseinfo='Internet Explorer';

}

if(ereg('Chrome',$Agent)){

$browseinfo="Chrome";

}

if(ereg('Firefox',$Agent)){

$browseinfo="Firefox";

}

return $browseinfo;

}

function getIP(){//记录来访者的IP信息

global $_SERVER;

if(getenv('HTTP_CLIENT_IP')){

$ip=getenv('HTTP_CLIENT_IP');

}else if(getenv('HTTP_X_FORWARDED_FOR')){

$ip=getenv('HTTP_X_FORWARDED_FOR');

}else if(getenv('REMOTE_ADDR')){

$ip=getenv('REMOTE_ADDR');

}else{

$ip=$_SERVER['REMOTE_ADDR'];

}

return $ip;

}

function getOS(){//记录来访者的系统信息

global $_SERVER;

$agent=$_SERVER['HTTP_USER_AGENT'];

$os=false;

if(eregi('win',$agent)&&strpos($agent,'95')){

$os='Windows 95';

}else if(eregi('win 9x',$agent)&&strpos($agent,'4.90')){

$os='Windows ME';

}else if(eregi('win',$agent)&&ereg('98',$agent)){

$os='Windows 98';

}else if(eregi('win',$agent)&&eregi('nt 5.1',$agent)){

$os='Windows XP';

}else if(eregi('win',$agent)&&eregi('nt 5.2',$agent)){

$os='Windows 2003';

}else if(eregi('win',$agent)&&eregi('nt 5',$agent)){

$os='Windows 2000';

}else if(eregi('win',$agent)&&eregi('nt',$agent)){

$os='Windows NT';

}else if(eregi('win',$agent)&&ereg('32',$agent)){

$os='Windows 32';

}else if(eregi('linux',$agent)){

$os='Linux';

}else if(eregi('unix',$agent)){

$os='Unix';

}else if(eregi('sun',$agent)&&eregi('os',$agent)){

$os='SunOS';

}else if(eregi('ibm',$agent)&&eregi('os',$agent)){

$os='IBM OS/2';

}else if(eregi('Mac',$agent)&&eregi('PC',$agent)){

$os='Macintosh';

}else if(eregi('PowerPC',$agent)){

$os='PowerPC';

}else if(eregi('AIX',$agent)){

$os='AIX';

}else if(eregi('HPUX',$agent)){

$os='HPUX';

}else if(eregi('NetBSD',$agent)){

$os='NetBSD';

}else if(eregi('BSD',$agent)){

$os='BSD';

}else if(ereg('OSF1',$agent)){

$os='OSF1';

}else if(ereg('IRIX',$agent)){

$os='IRIX';

}else if(eregi('FreeBSD',$agent)){

$os='FreeBSD';

}else if(eregi('teleport',$agent)){

$os='teleport';

}else if(eregi('flashget',$agent)){

$os='flashget';

}else if(eregi('webzip',$agent)){

$os='webzip';

}else if(eregi('offline',$agent)){

$os='offline';

}else{

$os='Unknown';

}

return $os;

}

$ob=getBrowse();

$os= getOS();

$ip=getIP();

$str="IP:".$ip;

$str2="OS:".$os;

$str3=$ob;

$str4="from : www.bcty365.com";

$width=250;//验证码图片的宽度

$height=110;//验证码图片的高度

@header("Content-Type:image/png");

$im=imagecreate($width,$height);

//背景色

$back=imagecolorallocate($im,0xFF,0xFF,0xFF);

//模糊点颜色

$pix=imagecolorallocate($im,187,230,247);

//字体色

$font=imagecolorallocate($im,41,163,238);

//绘模糊作用的点

mt_srand();

for($i=0;$i<1000;$i++){

imagesetpixel($im,mt_rand(0,$width),mt_rand(0,$height),$pix);

}

imagestring($im,5,7,5,$str,$font);

imagestring($im,5,7,30,$str2,$font);

imagestring($im,5,7,55,$str3,$font);

imagestring($im,5,7,80,$str4,$font);

imagerectangle($im,0,0,$width-1,$height-1,$font);

imagepng($im);

imagedestroy($im);