Function code to determine whether it is a mobile phone terminal through HTTP_USER_AGENT in PHP_PHP tutorial

function is_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));
$mobile_agents = array(
'w3c ','acs-','alav','alca','amoi' ,'audi','avan','benq','bird','blac', 'blaz','brew','cell','cldc','cmd-','dang',' doco','eric','hipt','inno', 'ipaq','java','jigs','kddi','keji','leno','lg-c','lg -d','lg-g','lge-', 'maui','maxo','midp','mits','mmef','mobi','mot-','moto' ,'mwbp','nec-',                                                                                                                                                                                                          'newt','noki','oper','palm','pana','pant','phil','play','port',' prox',
'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
        'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-', 
'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp', 'wapr' ,'webc','winw','winw','xda','xda-'                                                                                            (strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false)
$mobile_browser++;
// Pre-final check to reset everything if the user is on Windows
if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false)
$mobile_browser=0;
// But WP7 is also Windows, with a slightly different characteristic
if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false)
$mobile_browser++;
if($mobile_browser>0)
return true;
else else
return false;
}


Article source: http://yi1.com.cn/posts/781

php determines the user browser type based on HTTP_USER_AGENT



Copy the code

The code is as follows:

function browsers(){
global $HTTP_USER_AGENT ;
if (isset($HTTP_USER_AGENT)){
$sAgent = $HTTP_USER_AGENT;
}else{
$sAgent = $_SERVER['HTTP_USER_AGENT'];
}
if (strpos($sAgent,'MSIE') !== false && strpos($sAgent,'mac') === false && strpos($sAgent ,'Opera') === false){
$iVersion = (float)substr($sAgent,strpos($sAgent,'MSIE') + 5,3);
return ($iVersion >= 5.5) ;
}else if (strpos($sAgent,'Gecko/') !== false){
$iVersion = (int)substr($sAgent,strpos($sAgent,'Gecko/') + 6,8);
return ($iVersion >= 20030210) ;
}else{
return false;
}
}