PHP 获取访问者IP的方法

$ip = $_SERVER["REMOTE_ADDR"];

else if(getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");

function getIP()
{
    static $realip;
    if (isset($_SERVER)){
        if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
            $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
        } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
            $realip = $_SERVER["HTTP_CLIENT_IP"];
        } else {
            $realip = $_SERVER["REMOTE_ADDR"];
        }
    } else {
        if (getenv("HTTP_X_FORWARDED_FOR")){
            $realip = getenv("HTTP_X_FORWARDED_FOR");
        } else if (getenv("HTTP_CLIENT_IP")) {
            $realip = getenv("HTTP_CLIENT_IP");
        } else {
            $realip = getenv("REMOTE_ADDR");
        } www.111cn.net
    }
    return $realip;
}

function get_onlineip() {
    $ch = curl_init('http://www.ip138.com/ip2city.asp');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $a  = curl_exec($ch);
    preg_match('/[(.*)]/', $a, $ip);
    return $ip[1];
 }

<?php
$imgurl_str="||http://www.111cn.net|http://www.111cn.net|http://www.111cn.net";
$imgurl_arr = explode ( "|", $imgurl_str );
$imgurl_arr =array_filter($imgurl_arr);
print_r($imgurl_arr);
$imgurl_arr = array_values($imgurl_arr);
print_r($imgurl_arr);
/*

Array

(

    
[2] => http://www.111cn.net

    
[3] => http://www.111cn.net

    
[4] => http://www.111cn.net

)

Array

(

    
[0] => http://www.111cn.net

    
[1] => http://www.111cn.net

    
[2] => http://www.111cn.net

)

*/

?>

//模拟登录
function login_post($url, $cookie, $post) {
    $curl = curl_init();//初始化curl模块
    curl_setopt($curl, CURLOPT_URL, $url);//登录提交的地址
    curl_setopt($curl, CURLOPT_HEADER, 0);//是否显示头信息
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 0);//是否自动显示返回的信息
    curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie); //设置Cookie信息保存在指定的文件中
    curl_setopt($curl, CURLOPT_POST, 1);//post方式提交
    curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($post));//要提交的信息
    curl_exec($curl);//执行cURL
    curl_close($curl);//关闭cURL资源，并且释放系统资源
}

//登录成功后获取数据
function get_content($url, $cookie) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie); //读取cookie
    $rs = curl_exec($ch); //执行cURL抓取页面内容
    curl_close($ch);
    return $rs;
}

<script type="text/javascript" src="jquery-1.5.1.min.js"></script>

<script

    type="text/javascript" src="ajaxfileupload.js"></script>

<form id="upform" action="" method="post" enctype="multipart/form-data">

    <input id='fname' size='80' /><br> <input type="file" name="file1"

       id="file1" size="30" /> <input type="button" value="上传"

       onclick="return ajaxFileUpload();" /> <span id="msg"

       style="display: none">UpLoading...</span>

</form>

<script type="text/javascript">

var str = '';

function ajaxFileUpload(){

    $("#msg")

    .ajaxStart(function(){

       $(this).show();

    });

    /*

    .ajaxComplete(function(){

       $(this).hide();

    });

    */

    $.ajaxFileUpload(

    {

       url:'up_deal.php',

       secureuri:false,

       fileElementId:'file1',

       dataType: 'text',

       //data:{name:'qinmi', id:'123'},

       success: function(data){

              if(data=='error'){

                  $('#msg').html("<span style='color:red'>上传失败</span>");

              }else{ www.111cn.net

                  $('#msg').html("<span style='color:green'>上传成功</span>");

                  str +=  data+'@';

                  $('#fname').val(str);

              }

           }

       }

    );

    return false;

}

</script>

<?php

if ((($_FILES["file1"]["type"] == "image/gif")

|| ($_FILES["file1"]["type"] == "image/jpeg")

|| ($_FILES["file1"]["type"] == "image/bmp")

|| ($_FILES["file1"]["type"] == "image/pjpeg"))

&& ($_FILES["file1"]["size"] < 100000)){//100KB

    $extend = explode(".",$_FILES["file1"]["name"]);

    $key = count($extend)-1;

    $ext = ".".$extend[$key];

    $newfile = time().$ext;

    if(!file_exists('upload')){mkdir('upload');}

    move_uploaded_file($_FILES["file1"]["tmp_name"],"upload/" . $newfile);

    @unlink($_FILES['file1']);

    echo $newfile;

}else {

    echo 'error';

}

?>