<!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
//获取关键词及所属来源搜索引擎名称
$search_url = isset($_GET['url'])?$_GET['url']:''; //代表传入的地址
/*$search_url = urldecode($search_url);
print_r($search_url);
*/
$config = array(
"s1"=>array(
"domain" => "google.com",
"kw" => "q",
"charset" => "utf-8"
),
"s3"=>array(
"domain" => "google.cn",
"kw" => "q",
"charset" => "utf-8"
),
"s4"=>array(
"domain" => "baidu.com",
"kw" => "wd",
"charset" => "gbk"
),
"s5"=>array(
"domain" => "soso.com",
"kw" => "q",
"charset" => "utf-8"
),
"s6"=>array(
"domain" => "yahoo.com",
"kw" => "q",
"charset" => "utf-8"
),
"s7"=>array(
"domain" => "bing.com",
"kw" => "q",
"charset" => "utf-8"
),
"s8"=>array(
"domain" => "sogou.com",
"kw" => "query",
"charset" => "gbk"
),
"s9"=>array(
"domain" => "youdao.com",
"kw" => "q",
"charset" => "utf-8"
),
);
//函数作用：从url中提取关键词。参数说明：url及关键词前的字符。
function get_keyword($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); //最终提取的关键词
}
$keys = explode(" ",$F_Skey);
$arr_key[$item['domain']] = $keys;
}
}
echo "<pre>";
print_r($arr_key);
?>
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