PHP records visitor information and generates pictures_PHP tutorial

php records the visitor's information and generates pictures

php records the visitor's relevant information and generates pictures. The rendering is as follows.

The code is as follows. This article only writes some basic things. Friends in need can modify it according to their own situation.

<?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.phpernote.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);

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