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php中獲取關(guān)鍵詞及所屬來(lái)源搜索引擎名稱的代碼

更新時(shí)間：2011年02月15日 01:19:59 作者：

有時(shí)候我們需要知道用戶通過哪個(gè)搜索引擎，通過拿個(gè)關(guān)鍵詞訪問我們頁(yè)面，當(dāng)然js也可以實(shí)現(xiàn)，但這里介紹下php的實(shí)現(xiàn)代碼。

 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>greengnn codes</title> 
</head> 
<body> 
<form action="index.php" method="get"> 
<input name="url" size="80"><button type="submit">GO</button> 
</form> 

<?php 
//獲取關(guān)鍵詞及所屬來(lái)源搜索引擎名稱 

$search_url = isset($_GET['url'])?$_GET['url']:''; //代表傳入的地址 
/*$search_url = urldecode($search_url); 
print_r($search_url); 
*/ 

$config = array( 
"s1"=>array( 
"domain" => "google.com", 
"kw" => "q", 
"charset" => "utf-8" 
), 
"s3"=>array( 
"domain" => "google.cn", 
"kw" => "q", 
"charset" => "utf-8" 
), 
"s4"=>array( 
"domain" => "baidu.com", 
"kw" => "wd", 
"charset" => "gbk" 
), 
"s5"=>array( 
"domain" => "soso.com", 
"kw" => "q", 
"charset" => "utf-8" 
), 
"s6"=>array( 
"domain" => "yahoo.com", 
"kw" => "q", 
"charset" => "utf-8" 
), 
"s7"=>array( 
"domain" => "bing.com", 
"kw" => "q", 
"charset" => "utf-8" 
), 
"s8"=>array( 
"domain" => "sogou.com", 
"kw" => "query", 
"charset" => "gbk" 
), 
"s9"=>array( 
"domain" => "youdao.com", 
"kw" => "q", 
"charset" => "utf-8" 
), 
); 

//函數(shù)作用：從url中提取關(guān)鍵詞。參數(shù)說(shuō)明：url及關(guān)鍵詞前的字符。 
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; 
} 

$arr_key = array(); 
foreach($config as $item){ 
$sh = preg_match("/\b{$item['domain']}\b/",$search_url); 
if($sh){ 
$query = $item['kw']."="; 

$s_s_keyword = get_keyword($search_url,$query); 
$F_Skey=urldecode($s_s_keyword); 
if($item['charset']=="utf-8"){ 
$F_Skey=iconv( "UTF-8","gb2312//IGNORE",$F_Skey); //最終提取的關(guān)鍵詞 
} 
$keys = explode(" ",$F_Skey); 
$arr_key[$item['domain']] = $keys; 
} 
} 
echo "<pre>"; 
print_r($arr_key); 
?> 