Determine if "Mobile Access Access" "PHP"

Take the SP framework as an example: <?phpclass main extends Spcontroller//main is a PC-side ingress controller, equivalent to the default Indexcontroller.php{function __construct () {   Parent::__construct ();  if ($this->ismobile ()) {   //redirect to mobile   header ("　　Location:http://$_server[http_host]/mobile.php "); mobile.php for mobile port entry files    exit; }else{   .... }  }  <?php  class Spcontroller { /**  * Whether mobile Access   *  * @return bool  */ public function IsMobile ()  {     //If you have http_x_wap_profile, it must be a mobile device      if (isset ($_server[' HTTP_X_WAP_ Profile '))      {         return true;     }     // If VIA information contains WAP, it must be a mobile device, some service associations block this information      if (isset ($_server[' Http_via '))      {         //not found for flase, otherwise true         return stristr ($_server[' Http_via '), " WAP ")? true:false;&nbsp    }     //brain residue method, determine the mobile phone to send the client logo, compatibility needs to be improved      if (isset ($_server[' http_user_agent ' ])      {          $clientkeywords = array (' Nokia ',        &NB Sp     ' Sony ',              ' Ericsson ',            and nbsp; ' Mot ',              ' Samsung ',              ' HTC ', &nbsp ;             ' SGH ',              ' LG ',      & nbsp       ' sharp ',              ' sie-',          &NBS P   ' Philips ',              ' Panasonic ',            &NBS P; ' Alcatel ',              ' Lenovo ',              ' IphonE ',              ' ipod ',              ' BlackBerry ', &NB Sp             ' Meizu ',              ' Android ',    & nbsp         ' NetFront ',              ' Symbian ',      &NBSP ;       ' UCWeb ',              ' WindowsCE ',              ' palm ',              ' Operamini ',              ' Operamobi ',              ' Openwave ',            &N BSP; ' Nexusone ',              ' CLDC ',              ' MIDP ', &N Bsp             ' WAP ',              ' mobile '     &NBSP ;       );         //find mobile browser keywords from http_user_agent          if (Preg_match ("/("). Implode (' | ', $clientkeywords). ")/I", Strtolower ($_server[' http_user_agent ')))          {          nbsp  return true;         }     }     //protocol, as it may be inaccurate and put to the final Judgment & nbsp    if (isset ($_server[' http_accept '))      {         // If only WML is supported and HTML is not supported then it must be mobile          //if WML and HTML are supported, but WML is mobile before HTML,          if ((Strpos ($_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;  &NBsp      }     }     return false; }

Determine if the Mobile Access Access "PHP"