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<?php
 
function search_word_from() {
    $referer = isset($_SERVER[&#39;HTTP_REFERER&#39;])?$_SERVER[&#39;HTTP_REFERER&#39;]:^^ `;
    if(strstr( $referer, &#39;baidu.com&#39;)){ //°Ù¶È
        preg_match( "|baidu.+wo?r?d=([^\\&]*)|is", $referer, $tmp );
        $keyword = urldecode( $tmp[1] );
        $from = &#39;baidu&#39;;
    }elseif(strstr( $referer, &#39;google.com&#39;) or strstr( $referer, &#39;google.cn&#39;)){ //¹È¸è
        preg_match( "|google.+q=([^\\&]*)|is", $referer, $tmp );
        $keyword = urldecode( $tmp[1] );
        $from = &#39;google&#39;;
    }elseif(strstr( $referer, &#39;so.com&#39;)){ //360ËÑË÷
        preg_match( "|so.+q=([^\\&]*)|is", $referer, $tmp );
        $keyword = urldecode( $tmp[1] );
        $from = &#39;360&#39;; 
    }elseif(strstr( $referer, &#39;sogou.com&#39;)){ //Ëѹ·
        preg_match( "|sogou.com.+query=([^\\&]*)|is", $referer, $tmp );
        $keyword = urldecode( $tmp[1] );
        $from = &#39;sogou&#39;;   
    }elseif(strstr( $referer, &#39;soso.com&#39;)){ //ËÑËÑ
        preg_match( "|soso.com.+w=([^\\&]*)|is", $referer, $tmp );
        $keyword = urldecode( $tmp[1] );
        $from = &#39;soso&#39;;
    }else {
        $keyword =^^ `;
        $from = ^^ `;
    }
 
    return array(&#39;keyword&#39;=>$keyword,&#39;from&#39;=>$from);
}
 
//ÒÔÏÂΪ²âÊÔ
//ÔÚËÑË÷ÒýÇæËÑË÷¸ö¹Ø¼ü´Ê£¬½øÈëÍøÕ¾
$word = search_word_from();
if(!empty($word[&#39;keyword&#39;])){
    echo &#39;¹Ø¼ü×Ö£º&#39;.$word[&#39;keyword&#39;].&#39; À´×Ô£º&#39;.$word[&#39;from&#39;];
}
?>