function fromRobot($except = '') {
$ua = strtolower ( $_SERVER ['HTTP_USER_AGENT'] );
$botchar = "/(baidu|google|spider|soso|yahoo|sohu-search|yodao|robozilla|AhrefsBot|Bing)/i";
$except ? $botchar = str_replace ( $except . '|', '', $botchar ) : '';
if (preg_match ( $botchar, $ua )) {
return true;
}
return false;
}
if(fromRobot()){
// 执行
}
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php 判断访客是否为搜索引擎蜘蛛
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