php 判斷客戶端是否爲手機端訪問 2019.6改進版

function isMobile() {
// 若是有HTTP_X_WAP_PROFILE則必定是移動設備
if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
return true;
}
// 若是via信息含有wap則必定是移動設備,部分服務商會屏蔽該信息
if (isset($_SERVER['HTTP_VIA'])) {
// 找不到爲flase,不然爲true
if(stristr($_SERVER['HTTP_VIA'], "wap") !== false){
return true;
}
}
// 腦殘法，判斷手機發送的客戶端標誌,兼容性有待提升。其中'MicroMessenger'是電腦微信
if (isset($_SERVER['HTTP_USER_AGENT'])) {
$clientkeywords = 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-'
);
// 從HTTP_USER_AGENT中查找手機瀏覽器的關鍵字
if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))) {
return true;
}
}
// 協議法，由於有可能不許確，放到最後判斷
if (isset ($_SERVER['HTTP_ACCEPT'])) {
// 若是隻支持wml而且不支持html那必定是移動設備
// 若是支持wml和html可是wml在html以前則是移動設備
if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))) {
return true;
}
}

if (strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false
|| strpos($_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) {
return true;
}

return false;
}