The assistant class is as follows:
The principle is to verify the header

 0) return true; else return false; } }

Mobile_Detect是轻量级php库通过User-agent和特定的人HttpJudge by the head:

• Mobile_Detect

function is_mobile() { if(empty($_SERVER['HTTP_USER_AGENT']))return false; $user_agent = strtolower($_SERVER['HTTP_USER_AGENT']); $mobile_agents = Array("240x320","acer","acoon","acs-","abacho","ahong","airness","alcatel","amoi","android","anywhereyougo.com","applewebkit/525","applewebkit/532","asus","audio","au-mic","avantogo","becker","benq","bilbo","bird","blackberry","blazer","bleu","cdm-","compal","coolpad","danger","dbtel","dopod","elaine","eric","etouch","fly ","fly_","fly-","go.web","goodaccess","gradiente","grundig","haier","hedy","hitachi","htc","huawei","hutchison","inno","ipad","ipaq","ipod","jbrowser","kddi","kgt","kwc","lenovo","lg ","lg2","lg3","lg4","lg5","lg7","lg8","lg9","lg-","lge-","lge9","longcos","maemo","mercator","meridian","micromax","midp","mini","mitsu","mmm","mmp","mobi","mot-","moto","nec-","netfront","newgen","nexian","nf-browser","nintendo","nitro","nokia","nook","novarra","obigo","palm","panasonic","pantech","philips","phone","pg-","playstation","pocket","pt-","qc-","qtek","rover","sagem","sama","samu","sanyo","samsung","sch-","scooter","sec-","sendo","sgh-","sharp","siemens","sie-","softbank","sony","spice","sprint","spv","symbian","tablet","talkabout","tcl-","teleca","telit","tianyu","tim-","toshiba","tsm","up.browser","utec","utstar","verykool","virgin","vk-","voda","voxtel","vx","wap","wellco","wig browser","wii","windows ce","wireless","xda","xde","zte"); $is_mobile = false; foreach ($mobile_agents as $device) { if (stristr($user_agent, $device)) { $is_mobile = true; break; } } return $is_mobile; }

Post the code in THINKcmf

/** * 判断是否为手机访问 * @return boolean */ function sp_is_mobile() { static $sp_is_mobile; if ( isset($sp_is_mobile) ) return $sp_is_mobile; if ( empty($_SERVER['HTTP_USER_AGENT']) ) { $sp_is_mobile = false; } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.) || strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mobi') !== false ) { $sp_is_mobile = true; } else { $sp_is_mobile = false; } return $sp_is_mobile; } /** * 判断是否为微信访问 * @return boolean */ function sp_is_weixin(){ if (strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false) { return true; } return false; }

Of course, if you still need to judge Android or iOS, there is a simple method. Customize the value of HTTP_USER_AGENT on the mobile side, and then get $_SERVER['HTTP_USER_AGENT'] from the server. For example, add a my_webapp to determine whether this character is Existence

$user_agent = $_SERVER['HTTP_USER_AGENT']; if (stripos($user_agent, 'my_webapp') !== false) { $this->assign("is_webapp", true); }

I answered this question in segment fault, and the questioner said it was valid at that time: /q/101...