/**
* 判斷用戶請求設備是否是移動設備
* @return bool
*/
function isMobile() {
//如果有HTTP_X_WAP_PROFILE則一定是移動設備
if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
return true;
}
//如果via信息含有wap則一定是移動設備,部分服務商會屏蔽該信息
if (isset($_SERVER['HTTP_VIA']) && stristr($_SERVER['HTTP_VIA'], 'wap')) {
return true;
}
//野蠻方法,判斷手機發送的客戶端標志,兼容性有待提高
if (isset($_SERVER['HTTP_USER_AGENT'])) {
$clientKeywords = ['nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile'];
//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,因為有可能不準確,放到最后判斷
if (isset($_SERVER['HTTP_ACCEPT'])) {
//如果只支持wml并且不支持html那一定是移動設備
//如果支持wml和html但是wml在html之前則是移動設備
if ((strpos($_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;
}
}
return false;
}
