代码实现： ```python def auto_detect(): if isset($_SERVER['HTTP_USER_AGENT']): $ag
要实现PHP自动识别判断电脑端和手机端，可以使用`$_SERVER['HTTP_USER_AGENT']`来获取用户代理字符串，然后通过正则表达式匹配来判断设备类型。以下是一个简单的示例： ```php <?php function getDeviceType() { $userAgent = $_SERVER['HTTP_USER_AGENT']; if (preg_match('/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i', $userAgent)) { return 'mobile'; } else { return 'pc'; } } $deviceType = getDeviceType(); if ($deviceType == 'mobile') { echo '手机端'; } else { echo '电脑端'; } ?> ``` 这段代码首先定义了一个`getDeviceType()`函数，用于获取设备
通过判断浏览器的模式来进行页面读取，自动识别判断电脑端和手机端，根据结果跳转访问不同的页面，最后的业务逻辑自己改。
代码如下：
<?phpfunctionis_mobile_request(){$_SERVER['ALL_HTTP']=isset($_SERVER['ALL_HTTP'])?$_SERVER['ALL_HTTP']:'';$mobile_browser='0';if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i',strtolower($_SERVER['HTTP_USER_AGENT'])))$mobile_browser++;if((isset($_SERVER['HTTP_ACCEPT']))and(strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml')!==false))$mobile_browser++;if(isset($_SERVER['HTTP_X_WAP_PROFILE']))$mobile_browser++;if(isset($_SERVER['HTTP_PROFILE']))$mobile_browser++;$mobile_ua=strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));$mobile_agents=array('w3c','acs-','alav','alca','amoi','audi','avan','benq','bird','blac','blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno','ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-','maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-','newt','noki','oper','palm','pana','pant','phil','play','port','prox','qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar','sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-','tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp','wapr','webc','winw','winw','xda','xda-');if(in_array($mobile_ua,$mobile_agents))$mobile_browser++;if(strpos(strtolower($_SERVER['ALL_HTTP']),'operamini')!==false)$mobile_browser++;if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windows')!==false)$mobile_browser=0;if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windowsphone')!==false)$mobile_browser++;if($mobile_browser>0){returntrue;}else{returnfalse;}}if(is_mobile_request()){require('https://m.caijicaiji.com/');}else{require('https://www.caijicaiji.com/');}?>
