获取访客的IP和地址

<?php
$url="http://ip-api.com/json/?lang=zh-CN"; 
$UserAgent = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36';  
$curl = curl_init(); 
curl_setopt($curl, CURLOPT_URL, $url); 
curl_setopt($curl, CURLOPT_HEADER, 0);  
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);  
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);  
curl_setopt($curl, CURLOPT_ENCODING, '');  
curl_setopt($curl, CURLOPT_USERAGENT, $UserAgent);  
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);  
$data = curl_exec($curl);
$data = json_decode($data, true);
$country = $data['country']; 
$region = $data['regionName']; 
$city = $data['city'];
$ip = $data['query'];
echo '来自'.$country.'-'.$region.'-'.$city.'的朋友';
echo '<br>';
echo 'IP是:'.$ip;
?>

获取浏览器信息

<?php 
function get_bro(){  
     $sys = $_SERVER['HTTP_USER_AGENT'];  //获取用户代理字符串  
     if (stripos($sys, "Firefox/") > 0) {  
         preg_match("/Firefox\/([^;)]+)+/i", $sys, $b);  
         $exp[0] = "Firefox";  
         $exp[1] = $b[1];  //获取火狐浏览器的版本号  
     } elseif (stripos($sys, "Maxthon") > 0) {  
         preg_match("/Maxthon\/([\d\.]+)/", $sys, $aoyou);  
         $exp[0] = "傲游";  
         $exp[1] = $aoyou[1];  
     } elseif (stripos($sys, "MSIE") > 0) {  
         preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);  
         $exp[0] = "IE";  
         $exp[1] = $ie[1];  //获取IE的版本号  
     } elseif (stripos($sys, "OPR") > 0) {  
             preg_match("/OPR\/([\d\.]+)/", $sys, $opera);  
         $exp[0] = "Opera";  
         $exp[1] = $opera[1];    
     } elseif(stripos($sys, "Edge") > 0) {  
         //win10 Edge浏览器 添加了chrome内核标记 在判断Chrome之前匹配  
         preg_match("/Edge\/([\d\.]+)/", $sys, $Edge);  
         $exp[0] = "Edge";  
         $exp[1] = $Edge[1];  
     } elseif (stripos($sys, "Chrome") > 0) {  
             preg_match("/Chrome\/([\d\.]+)/", $sys, $google);  
         $exp[0] = "Chrome";  
         $exp[1] = $google[1];  //获取google chrome的版本号  
     } elseif(stripos($sys,'rv:')>0 && stripos($sys,'Gecko')>0){  
         preg_match("/rv:([\d\.]+)/", $sys, $IE);  
             $exp[0] = "IE";  
         $exp[1] = $IE[1];  
     }else {  
        $exp[0] = "未知浏览器";  
        $exp[1] = "";   
     }  
     return $exp[0].'('.$exp[1].')';  
}
?>

获取操作系统信息

function get_os(){  
$agent = $_SERVER['HTTP_USER_AGENT'];  
    $os = false;  
   
    if (preg_match('/win/i', $agent) && strpos($agent, '95'))  
    {  
      $os = 'Windows 95';  
    }  
    else if (preg_match('/win 9x/i', $agent) && strpos($agent, '4.90'))  
    {  
      $os = 'Windows ME';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/98/i', $agent))  
    {  
      $os = 'Windows 98';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/nt 6.0/i', $agent))  
    {  
      $os = 'Windows Vista';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/nt 6.1/i', $agent))  
    {  
      $os = 'Windows 7';  
    }  
      else if (preg_match('/win/i', $agent) && preg_match('/nt 6.2/i', $agent))  
    {  
      $os = 'Windows 8';  
    }else if(preg_match('/win/i', $agent) && preg_match('/nt 10.0/i', $agent))  
    {  
      $os = 'Windows 10';#添加win10判断  
    }else if (preg_match('/win/i', $agent) && preg_match('/nt 5.1/i', $agent))  
    {  
      $os = 'Windows XP';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/nt 5/i', $agent))  
    {  
      $os = 'Windows 2000';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/nt/i', $agent))  
    {  
      $os = 'Windows NT';  
    }  
    else if (preg_match('/win/i', $agent) && preg_match('/32/i', $agent))  
    {  
      $os = 'Windows 32';  
    }  
    else if (preg_match('/linux/i', $agent))  
    {  
      $os = 'Linux';  
            if ( preg_match( '/Android.([0-9. _]+)/i', $agent, $matches ) ) {
            $os = 'Android';
        } elseif ( preg_match( '#Ubuntu#i', $agent ) ) {
            $os = 'Ubuntu';
        } elseif ( preg_match( '#Debian#i', $agent ) ) {
            $os = 'Debian';
        } elseif ( preg_match( '#Fedora#i', $agent ) ) {
            $os = 'Fedora';
        }
    }  
    else if (preg_match('/unix/i', $agent))  
    {  
      $os = 'Unix';  
    }  
    else if (preg_match('/sun/i', $agent) && preg_match('/os/i', $agent))  
    {  
      $os = 'SunOS';  
    }  
    else if (preg_match('/ibm/i', $agent) && preg_match('/os/i', $agent))  
    {  
      $os = 'IBM OS/2';  
    }  
    else if (preg_match('/Mac/i', $agent) && preg_match('/PC/i', $agent))  
    {  
      $os = 'Macintosh';  
    }  
    else if (preg_match('/PowerPC/i', $agent))  
    {  
      $os = 'PowerPC';  
    }  
    else if (preg_match('/AIX/i', $agent))  
    {  
      $os = 'AIX';  
    }  
    else if (preg_match('/HPUX/i', $agent))  
    {  
      $os = 'HPUX';  
    }  
    else if (preg_match('/NetBSD/i', $agent))  
    {  
      $os = 'NetBSD';  
    }  
    else if (preg_match('/BSD/i', $agent))  
    {  
      $os = 'BSD';  
    }  
    else if (preg_match('/OSF1/i', $agent))  
    {  
      $os = 'OSF1';  
    }  
    else if (preg_match('/IRIX/i', $agent))  
    {  
      $os = 'IRIX';  
    }  
    else if (preg_match('/FreeBSD/i', $agent))  
    {  
      $os = 'FreeBSD';  
    }  
    else if (preg_match('/teleport/i', $agent))  
    {  
      $os = 'teleport';  
    }  
    else if (preg_match('/flashget/i', $agent))  
    {  
      $os = 'flashget';  
    }  
    else if (preg_match('/webzip/i', $agent))  
    {  
      $os = 'webzip';  
    }  
    else if (preg_match('/offline/i', $agent))  
    {  
      $os = 'offline';  
    }  
    else  
    {  
      $os = '未知操作系统';  
    }  
    return $os;    
}  
?>