摘要：代碼示例去掉以分開成數組取第一個以前的字符來自谷歌來自百度來自雅虎來自搜狗來自搜搜來自必應來自有道谷歌百度雅虎搜狗搜索必應有道

1.代碼示例

  $val["fromurl"] = $_SERVER["HTTP_REFERER"];

 if(!empty($val["fromurl"]))
            {
                $str   = str_replace("https://","",$val["fromurl"]);  //去掉http://
                $strdomain = explode("/",$str);               // 以“/”分開成數組
                $domain    = $strdomain[0];              //取第一個“/”以前的字符
                $search_1="google.com"; //q= utf8
                $search_2="baidu.com"; //wd= gbk
                $search_3="yahoo.cn"; //q= utf8
                $search_4="sogou.com"; //query= gbk
                $search_5="so.com"; //w= gbk
                $search_6="bing.com"; //q= utf8
                $search_7="youdao.com"; //q= utf8

                $google=preg_match("/{$search_1}/",$domain);//來自谷歌
                $baidu=preg_match("/{$search_2}/",$domain);//來自百度
                $yahoo=preg_match("/{$search_3}/",$domain);//來自雅虎
                $sogou=preg_match("/{$search_4}/",$domain);//來自搜狗
                $soso=preg_match("/{$search_5}/",$domain);//來自搜搜
                $bing=preg_match("/{$search_6}/",$domain);//來自必應
                $youdao=preg_match("/{$search_7}/",$domain);//來自有道

                if($google)
                {
                    $this->_d["list"][$key]["fromName"]= "谷歌";
                }
                if($baidu)
                {
                    $this->_d["list"][$key]["fromName"]= "百度";
                    if(strpos($val["fromurl"], "?") !== false) {
                        $result =  explode("wd=",$val["fromurl"]);
                        $result =  explode("&",$result[1]);
                        $this->_d["list"][$key]["keyword"] = $result[0];
                    }
                    else
                    {
                        $this->_d["list"][$key]["keyword"] = "";
                    }
                }
                if($yahoo)
                {
                    $this->_d["list"][$key]["fromName"]= "雅虎";
                }
                if($sogou)
                {
                    $this->_d["list"][$key]["fromName"]= "搜狗";
                    if(strpos($val["fromurl"], "?") !== false) {
                        $result =  explode("?",$val["fromurl"]);
                        $result =  explode("&",$result[1]);
                        $result =  explode("=",$result[0]);
                        $this->_d["list"][$key]["keyword"] = $result[1];
                    }
                    else
                    {
                        $this->_d["list"][$key]["keyword"] = "";
                    }
                }
                if($soso)
                {
                    $this->_d["list"][$key]["fromName"]= "360搜索";
                    if(strpos($val["fromurl"], "?") !== false) {
                        $result =  explode("?",$val["fromurl"]);
                        $result =  explode("&q=",$result[1]);
                        $this->_d["list"][$key]["keyword"] = $result[1];
                    }
                    else
                    {
                        $this->_d["list"][$key]["keyword"] = "";
                    }
                }
                if($bing)
                {
                    $this->_d["list"][$key]["fromName"]= "必應";
                }
                if($youdao)
                {
                    $this->_d["list"][$key]["fromName"]= "有道";
                }
           }