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PHP獲取搜索關(guān)鍵字問(wèn)題

網(wǎng)上找了一段代碼想實(shí)現(xiàn)獲取搜索關(guān)健字，測(cè)試了一個(gè)關(guān)健字取不了，是不是這代碼無(wú)效了，還是那里有BUG?

//取搜索來(lái)源關(guān)健字

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);

}

return $s_s_keyword;

}

$url=isset($_SERVER['HTTP_REFERER'])?$_SERVER['HTTP_REFERER']:'';//獲取入站url。

$search_1="google.com.hk"; //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

$search_8="so.com"; //q= utf8

$google=preg_match("/b{$search_1}b/",$url);//記錄匹配情況，用于入站判斷。

$baidu=preg_match("/b{$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);

$so=preg_match("/b{$search_8}b/",$url);

$s_s_keyword="";

// $bul=$_SERVER['HTTP_REFERER'];

$bul=$_REQUEST["comelink"];

//獲取沒(méi)參數(shù)域名

preg_match();

$burl=$matches[1];

//匹配域名設(shè)置

$curl="";

if($burl!=$curl){

if ($google)

{//來(lái)自google

$s_s_keyword=get_keyword($url,'q=');//關(guān)鍵詞前的字符為"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);//引擎為gbk

}

else if($baidu)

{//來(lái)自百度

$s_s_keyword=get_keyword($url,'wd=');//關(guān)鍵詞前的字符為"wd="。

$s_s_keyword=urldecode($s_s_keyword);

$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="百度：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($yahoo)

{//來(lái)自雅虎

$s_s_keyword=get_keyword($url,'q=');//關(guān)鍵詞前的字符為"q="。

$s_s_keyword=urldecode($s_s_keyword);

//$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="雅虎：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($sogou)

{//來(lái)自搜狗

$s_s_keyword=get_keyword($url,'query=');//關(guān)鍵詞前的字符為"query="。

$s_s_keyword=urldecode($s_s_keyword);

$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="搜狗：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($soso)

{//來(lái)自搜搜

$s_s_keyword=get_keyword($url,'w=');//關(guān)鍵詞前的字符為"w="。

$s_s_keyword=urldecode($s_s_keyword);

$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="搜搜：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($bing)

{//來(lái)自必應(yīng)

$s_s_keyword=get_keyword($url,'q=');//關(guān)鍵詞前的字符為"q="。

$s_s_keyword=urldecode($s_s_keyword);

//$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="必應(yīng)：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($so)

{//來(lái)自360

$s_s_keyword=get_keyword($url,'q=');//關(guān)鍵詞前的字符為"q="。

$s_s_keyword=urldecode($s_s_keyword);

//$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="360：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else if($youdao)

{//來(lái)自有道

$s_s_keyword=get_keyword($url,'q=');//關(guān)鍵詞前的字符為"q="。

$s_s_keyword=urldecode($s_s_keyword);

//$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎為gbk

$urlname="有道：";

$_SESSION["urlname"]=$urlname;

$_SESSION["s_s_keyword"]=$s_s_keyword;

}

else{

// $urlname=$burl;

$urlname="直接訪問(wèn)";

$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"];

}

------解決方案--------------------

有什么錯(cuò)誤提示嗎?

------解決方案--------------------

你那么代碼是N多年前的。

$_SERVER['HTTP_REFERER'] 不能獲取 https:// 的網(wǎng)站。

現(xiàn)在為了安全考慮，幾乎所有的搜索引擎都使用 https:// 而不是 http:// 。

更多信息請(qǐng)查看IT技術(shù)專欄