In order to facilitate SEO, we need to record the user through the common search engine search keywords, the following is to enter the situation of your site related to the implementation code, more, we expand their own slightly
The code is as follows: $rfr = $_server[' Http_referer ']; if (! $rfr) $rfr = ' http://' $_server[' http_host ']; if ($RFR) {$p =parse_url ($RFR); Parse_str ($p [' query '], $PA); $p [' Host ']=strtolower ($p [' Host ']); $arr _sd_key=array (' baidu.com ' => ' word ', ' google.com ' => ' Q ', ' sina.com.cn ' => ' word ', ' sohu.com ' = > ' word ', ' msn.com ' => ' Q ', ' bing.com ' => ' Q ', ' 163.com ' => ' Q ', ' yahoo.com ' => ' P '); $keyword = '; $sengine = $p [' Host ']; foreach ($arr _sd_key as $se => $kwd) {if Strpos ($p [' Host '], $se)!==false) {$keyword = $pa [$KWD]; $sengine = $se; Break } $sql = "INSERT into Visit_log (DOMAIN,KEY_WORD,CT)"; }