Browser detect code in PHP not detecting Opera -

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i found code in php documentation. seems nice , simple code, can detect google chrome, firefox, ie , safari cannot detect opera.

output in opera: browser: google chrome 45.0.2454.93 on windows reports:  mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, gecko) chrome/45.0.2454.93 safari/537.36 opr/32.0.1948.69

need in modifying code can detect opera.

  <?php     function getbrowser()     {         $u_agent = $_server['http_user_agent'];         $bname = 'unknown';         $platform = 'unknown';         $version= "";          //first platform?         if (preg_match('/linux/i', $u_agent)) {             $platform = 'linux';         }         elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {             $platform = 'mac';         }         elseif (preg_match('/windows|win32/i', $u_agent)) {             $platform = 'windows';         }          // next name of useragent yes seperately , reason         if(preg_match('/msie/i',$u_agent) && !preg_match('/opera/i',$u_agent))         {             $bname = 'internet explorer';             $ub = "msie";         }         elseif(preg_match('/trident/i',$u_agent))         { // condition ie11             $bname = 'internet explorer';             $ub = "rv";         }         elseif(preg_match('/firefox/i',$u_agent))         {             $bname = 'mozilla firefox';             $ub = "firefox";         }         elseif(preg_match('/chrome/i',$u_agent))         {             $bname = 'google chrome';             $ub = "chrome";         }         elseif(preg_match('/safari/i',$u_agent))         {             $bname = 'apple safari';             $ub = "safari";         }         elseif(preg_match('/opera/i',$u_agent))         {             $bname = 'opera';             $ub = "opera";         }         elseif(preg_match('/netscape/i',$u_agent))         {             $bname = 'netscape';             $ub = "netscape";         }          // correct version number         // added "|:"         $known = array('version', $ub, 'other');         $pattern = '#(?<browser>' . join('|', $known) .          ')[/|: ]+(?<version>[0-9.|a-za-z.]*)#';         if (!preg_match_all($pattern, $u_agent, $matches)) {             // have no matching number continue         }          // see how many have         $i = count($matches['browser']);         if ($i != 1) {             //we have 2 since not using 'other' argument yet             //see if version before or after name             if (strripos($u_agent,"version") < strripos($u_agent,$ub)){                 $version= $matches['version'][0];             }             else {                 $version= $matches['version'][1];             }         }         else {             $version= $matches['version'][0];         }          // check if have number         if ($version==null || $version=="") {$version="?";}          return array(             'useragent' => $u_agent,             'name'      => $bname,             'version'   => $version,             'platform'  => $platform,             'pattern'    => $pattern         );     }      // try     $ua=getbrowser();     $yourbrowser= "your browser: " . $ua['name'] . " " . $ua['version'] . " on " .$ua['platform'] . " reports: <br >" . $ua['useragent'];     print_r($yourbrowser);     ?>

it's working after changes...

i changed part....

 elseif(preg_match('/opera/i',$u_agent))         {             $bname = 'opera';             $ub = "opera";         }

to

 elseif(preg_match('/opr/i',$u_agent))         {             $bname = 'opera';             $ub = "opr";         }

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