最近遇到一个项目，客户需要一个功能，一个商品销售下单需要知道用户下单是从哪个途径来的，认为客服软件（53客服）和站长统计只能满足工作时间，及晚上下班和周六日休息，客服不在线，用户下单会不知道该订单的具体来源。

所以嘛，又只能通过网站功能来增加一字段，获取来源关键字，如何获取来源关键字，代码发在下面，里面包含（百度、谷歌、雅虎、搜狗、搜搜、必应、有道）几大搜索引擎的获取方法，代码中均注明，希望对你有帮助，分享一下

 <?php //获取来自搜索引擎入站时的关键词 function get_keyword($url,$kw_start) { $start=stripos($url,$kw_start); $url=substr($url,$start+strlen($kw_start)); $start=stripos($url,'&'); if ($start>0) { $start=stripos($url,'&'); $s_s_keyword=substr($url,0,$start); } else { $s_s_keyword=substr($url,0); }eturn $s_s_keyword; } $url=isset($_SERVER['HTTP_REFERER'])?$_SERVER['HTTP_REFERER']:'';//获取入站url。 $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="soso.com"; //w= gbk $search_6="bing.com"; //q= utf8 $search_7="youdao.com"; //q= utf8 $google=preg_match("/b{$search_1}b/",$url);//记录匹配情况，用于入站判断。 $baidu=preg_match("/b{$search_2}b/",$url); $yahoo=preg_match("/b{$search_3}b/",$url); $sogou=preg_match("/b{$search_4}b/",$url); $soso=preg_match("/b{$search_5}b/",$url); $bing=preg_match("/b{$search_6}b/",$url); $youdao=preg_match("/b{$search_7}b/",$url); $s_s_keyword=""; $bul=$_SERVER['HTTP_REFERER']; //获取没参数域名 preg_match('@^(?:http://)?([^/]+)@i',$bul,$matches); $burl=$matches[1]; //匹配域名设置 $curl="www.netxu.com"; if($burl!=$curl){ if ($google) {//来自google $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。 $s_s_keyword=urldecode($s_s_keyword); $urlname="谷歌："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk } else if($baidu) {//来自百度 $s_s_keyword=get_keyword($url,'wd=');//关键词前的字符为"wd="。 $s_s_keyword=urldecode($s_s_keyword); $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="百度："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else if($yahoo) {//来自雅虎 $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。 $s_s_keyword=urldecode($s_s_keyword); //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="雅虎："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else if($sogou) {//来自搜狗 $s_s_keyword=get_keyword($url,'query=');//关键词前的字符为"query="。 $s_s_keyword=urldecode($s_s_keyword); $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="搜狗："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else if($soso) {//来自搜搜 $s_s_keyword=get_keyword($url,'w=');//关键词前的字符为"w="。 $s_s_keyword=urldecode($s_s_keyword); $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="搜搜："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else if($bing) {//来自必应 $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。 $s_s_keyword=urldecode($s_s_keyword); //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="必应："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else if($youdao) {//来自有道 $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。 $s_s_keyword=urldecode($s_s_keyword); //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk $urlname="有道："; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } else{ $urlname=$burl; $s_s_keyword=""; $_SESSION["urlname"]=$urlname; $_SESSION["s_s_keyword"]=$s_s_keyword; } $s_urlname=$urlname; $s_urlkey=$s_s_keyword; } else{ $s_urlname=$_SESSION["urlname"]; $s_urlkey=$_SESSION["s_s_keyword"]; } ?> 

 <?php $_SERVER['HTTP_REFERER']='http://www.baidu.com/s?wd=http://www.jb51.net'; echo save_www_iiwnet_com_keyword('http://www.baidu.com/s?wd=http://www.jb51.net','http://www.baidu.com/s?wd=http://www.jb51.net'); function save_www_iiwnet_com_keyword($domain,$path){ if(strpos($domain, 'google.com.tw')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'GOOGLE TAIWAN'; $keywords = urldecode($regs[1]); // google taiwan } if(strpos($domain,'google.cn')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'GOOGLE CHINA'; $keywords = urldecode($regs[1]); // google china } if(strpos($domain,'google.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'GOOGLE'; $keywords = urldecode($regs[1]); // google }elseif(strpos($domain,'baidu.')!==false && preg_match('/wd=([^&]*)/i',$path,$regs)){ $searchengine = 'BAIDU'; $keywords = urldecode($regs[1]); // baidu }elseif(strpos($domain,'baidu.')!==false && preg_match('/word=([^&]*)/i',$path,$regs)){ $searchengine = 'BAIDU'; $keywords = urldecode($regs[1]); // baidu }elseif(strpos($domain,'114.vnet.cn')!== false && preg_match('/kw=([^&]*)/i',$path,$regs)){ $searchengine = 'CT114'; $keywords = urldecode($regs[1]); // ct114 }elseif(strpos($domain,'iask.com')!==false && preg_match('/k=([^&]*)/i',$path,$regs)){ $searchengine = 'IASK'; $keywords = urldecode($regs[1]); // iask }elseif(strpos($domain,'soso.com')!==false && preg_match('/w=([^&]*)/i',$path,$regs)){ $searchengine = 'SOSO'; $keywords = urldecode($regs[1]); // soso }elseif(strpos($domain, 'sogou.com')!==false && preg_match('/query=([^&]*)/i',$path,$regs)){ $searchengine = 'SOGOU'; $keywords = urldecode($regs[1]); // sogou }elseif(strpos($domain,'so.163.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'NETEASE'; $keywords = urldecode($regs[1]); // netease }elseif(strpos($domain,'yodao.com')!== false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'YODAO'; $keywords = urldecode($regs[1]); // yodao }elseif(strpos($domain,'zhongsou.com')!==false && preg_match('/word=([^&]*)/i',$path,$regs)){ $searchengine = 'ZHONGSOU'; $keywords = urldecode($regs[1]); // zhongsou }elseif(strpos($domain,'search.tom.com')!==false && preg_match('/w=([^&]*)/i',$path,$regs)){ $searchengine = 'TOM'; $keywords = urldecode($regs[1]); // tom }elseif(strpos($domain,'live.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'MSLIVE'; $keywords = urldecode($regs[1]); // MSLIVE }elseif(strpos($domain, 'tw.search.yahoo.com')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){ $searchengine = 'YAHOO TAIWAN'; $keywords = urldecode($regs[1]); // yahoo taiwan }elseif(strpos($domain,'cn.yahoo.')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){ $searchengine = 'YAHOO CHINA'; $keywords = urldecode($regs[1]); // yahoo china }elseif(strpos($domain,'yahoo.')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){ $searchengine = 'YAHOO'; $keywords = urldecode($regs[1]); // yahoo }elseif(strpos($domain,'msn.com.tw')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'MSN TAIWAN'; $keywords = urldecode($regs[1]); // msn taiwan }elseif(strpos($domain,'msn.com.cn')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'MSN CHINA'; $keywords = urldecode($regs[1]); // msn china }elseif(strpos($domain,'msn.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){ $searchengine = 'MSN'; $keywords = urldecode($regs[1]); // msn }eturn $keywords; }