本文实例讲述了PHP自定义函数获取搜索引擎来源关键字的方法。分享给大家供大家参考，具体如下：
获取搜索引擎来源关键字的函数：
'wd','v.baidu.com' => 'word','image.baidu.com' => 'word','news.baidu.com' => 'word','www.so.com' => 'q','video.so.com' => 'q','image.so.com' => 'q','news.so.com' => 'q','www.sogou.com' => 'query','pic.sogou.com' => 'query','v.sogou.com' => 'query',);
// 检查来源是否搜索引擎
if (!isset($_SERVER['HTTP_REFERER'])) {
return '';
}
$urls = parse_url($_SERVER['HTTP_REFERER']);
if (!array_key_exists($urls['host'],$host_keyword_map)) {
return '';
}
$key = $host_keyword_map[$urls['host']];
// 检查关键字参数是否存在
if (!isset($urls['query'])) {
return '';
}
$params = array();
parse_str($urls['query'],$params);
if (!isset($params[$key])) {
return '';
}
$keywords = $params[$key];
// 检查编码
$encoding = mb_detect_encoding($keywords,'utf-8,gbk');
if ($encoding != 'utf-8') {
$keywords = iconv($encoding,'utf-8',$keywords);
}
return $keywords;
}
函数测试：
rush:PHP;">
PHP
header("Content-Type: text/html; charset=utf-8");
$referers = array(
'http://www.baidu.com/s?cl=3&wd=%B9%E9%C0%B4&fr=vid1000','http://www.baidu.com/s?tn=92506501_hao_pg&rtt=1&bsst=1&wd=%B9%E9%C0%B4','http://www.baidu.com/link?url=ctBhF7AAau6LwE61pJOEH-ZhgUM7D3YHYMrm6xIXJlDQtMXCiea7gg49s90Q-Qh8wHD8Ano-dpnhUawBBNEEwEbtu8toMF5k1V7Xy850EtlpZyMcS0e_y-SCJp86iM6e&wd=%E5%BD%92%E6%9D%A5&tn=baidu&ie=utf-8&inputT=2980','http://www.baidu.com/link?url=TIn9NR6fwiy6IwwkCcVF8HhHoxVUpHQsyj1YdlQPy2roXKTnSQS_3UxwvyjZ2JPkpxF8-disoRCSpODUM_jq2K&wd=%E5%BD%92%E6%9D%A5&tn=baidu&ie=utf-8&input','http://news.baidu.com/ns?cl=2&rn=20&tn=news&word=%E5%BD%92%E6%9D%A5&ie=utf-8','http://image.baidu.com/i?ct=503316480&z=&tn=baiduimagedetail&ipn=d&word=%E5%BD%92%E6%9D%A5&step_word=&ie=utf-8&in=17668&cl=2&lm=-1&st=&pn=6&rn=1&di=70447907090&ln=1994&fr=news&&fmq=1402285886106_R&ic=&s=&se=&sme=0&tab=&width=&height=&face=&is=&istype=&ist=&jit=&objurl=http%3A%2F%2Fpic31.nipic.com%2F20130713%2F1287761_225159187345_2.jpg','http://v.baidu.com/v?ct=301989888&s=25&ie=utf-8&word=%E5%BD%92%E6%9D%A5','http://www.so.com/s?ie=utf-8&shb=1&src=360sou_newhome&q=%E5%BD%92%E6%9D%A5','http://video.so.com/v?q=%E5%BD%92%E6%9D%A5&src=tab_www','http://image.so.com/v?q=%E5%BD%92%E6%9D%A5&src=tab_video&fromurl=http%3A%2F%2Fndent.oeeee.com%2Fhtml%2F201309%2F16%2F258899.html','http://news.so.com/ns?q=%E5%BD%92%E6%9D%A5&src=tab_video','http://www.sogou.com/web?query=%E5%BD%92%E6%9D%A5&_asf=www.sogou.com&_ast=1402284372&w=01019900&p=40040100&ie=utf8&sut=6558&sst0=1402284372272&lkt=0%2C0%2C0','http://pic.sogou.com/d?query=%B9%E9%C0%B4&mood=0&picformat=0&mode=1&di=0&w=03021800&dr=1&did=1','http://v.sogou.com/v?query=%B9%E9%C0%B4&p=&w=','http://www.baidu.com/s?aaa=bbb','http://www.baidu.com/','//www.jb51.cc/',);
foreach ($referers as $r) {
$_SERVER['HTTP_REFERER'] = $r;
echo getKeywords(),"\n";
}
搜索引擎占有比率：
更多关于PHP相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》、《》、《》、《》、《》及《》
希望本文所述对大家PHP程序设计有所帮助。
