Code to obtain keywords and source search engine names in PHP_PHP tutorial

Copy code The code is as follows:

GO


//Get keywords and source search engine names

$search_url = isset($_GET['url'])?$_GET[' url']:''; //Represents the incoming address
/*$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"
),
);

//Function: extract keywords from the url. Parameter description: URL and characters before keywords.
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); //Finally extracted keywords
}
$keys = explode(" ",$F_Skey);
$arr_key[$item[ 'domain']] = $keys;
}
}
echo "

"; 
print_r($arr_key); 
?> 

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