本文实例讲述了php实现判断访问来路是否为搜索引擎机器人的方法。分享给大家供大家参考。具体分析如下:
很多时候我们需要对网站访客来路进行识别,针对真实用户与搜索引擎作不同动作实现,那么首先就需要判断是否为搜索引擎。
php判断方法非常简单,通过过滤$_SERVER['HTTP_USER_AGENT'] 参数即可进行识别,以下是摘录某开源程序的相关源码:
private function getRobot() { if (empty($_SERVER['HTTP_USER_AGENT'])) { return false; } $searchEngineBot = array( 'googlebot'=>'google', 'mediapartners-google'=>'google', 'baiduspider'=>'baidu', 'msnbot'=>'msn', 'yodaobot'=>'yodao', 'youdaobot'=>'yodao', 'yahoo! slurp'=>'yahoo', 'yahoo! slurp china'=>'yahoo', 'iaskspider'=>'iask', 'sogou web spider'=>'sogou', 'sogou push spider'=>'sogou', 'sosospider'=>'soso', 'spider'=>'other', 'crawler'=>'other', ); $spider = strtolower($_SERVER['HTTP_USER_AGENT']); foreach ($searchEngineBot as $key => $value) { if (strpos($spider, $key)!== false) { return $value; } } return false; } public function isRobot() { if($this->getRobot()!==false) { return true; } return false; }
希望本文所述对大家的php程序设计有所帮助。

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