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How does php determine mobile client access?

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2016-07-25 08:51:34971browse
  2. // check if wap
  3. function check_wap(){
  4. if(stristr($_SERVER['HTTP_VIA'],"wap")){// First check if it is a wap proxy, accurate High degree
  5. return true;
  6. }elseif(strpos(strtoupper($_SERVER['HTTP_ACCEPT']),"VND.WAP.WML") > 0){// Check whether the browser accepts WML.
  7. return true;
  8. }elseif(preg_match('/(blackberry|configuration/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker /M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])){//Check USER_AGENT
  9. return true;
  10. }else{
  11. return false;
  12. }
  13. }
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