PHP/HTML/HTTP USER AGENT

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Browser content

 
<html>
 <head>
  <title>Browser content</title>
 </head>
 <body>
 <?php
  $viewer = getenv( "HTTP_USER_AGENT" );
  $browser = "an unidentified browser";
  if( preg_match( "/MSIE/i", "$viewer")){ $browser = "Internet Explorer"; }
  else if( preg_match( "/Netscape/i", "$viewer"))
  { $browser = "Netscape"; }
  else if( preg_match( "/Opera/i", "$viewer"))
  { $browser = "Opera"; }
  $platform = "an unidentified operating system";
  if( preg_match( "/Windows/i", "$viewer"))
  { $platform = "Windows"; }
  else if( preg_match( "/Linux/i", "$viewer"))
  { $platform = "Linux"; }
  echo( "You"re using $browser on $platform" );
 ?>
 </body>
</html>



Browser Detection

 
<?
echo $HTTP_USER_AGENT;
?>



Determining client operating system and browser

 
<?
function browser_info ($agent) {
     if (ereg( "MSIE ([0�9].[0�9]{1,2})", $agent, $version)) :
          $browse_type = "IE";
          $browse_version = $version[1];
     elseif (ereg( "Opera ([0�9].[0�9]{1,2})", $agent, $version)) :
          $browse_type = "Opera";
          $browse_version = $version[1];
     elseif (ereg( "Mozilla/([0�9].[0�9]{1,2})", $agent, $version)) :
          $browse_type = "Netscape";
          $browse_version = $version[1];
     else :
          $browse_type = "Unknown";
          $browse_version = "Unknown";
     endif;
     return array($browse_type, $browse_version);
}
function operatingsystem_info($agent) {
     if ( strstr ($agent, "Win") ) :
          $operatingsystem = "Windows";
     elseif ( strstr($agent, "Linux") ) :
          $operatingsystem = "Linux";
     elseif ( strstr ($agent, "Unix") ) :
          $operatingsystem = "Unix";
     elseif ( strstr ($agent,"Mac") ) :
          $operatingsystem = "Macintosh";
     else :
          $operatingsystem = "Unknown";
     endif;
     return $operatingsystem;
}
list ($browse_type, $browse_version) = browser_info ($HTTP_USER_AGENT);
$operating_sys = operatingsystem_info ($HTTP_USER_AGENT);
print "Browser Type: $browse_type <br>";
print "Browser Version: $browse_version <br>";
print "Operating System: $operating_sys <br>";
?>



Get Browser and Platform

 
<html>
 <head>
  <title>Get Browser &amp; Platform</title>
 </head>
 <body>
 <?php
  $viewer = getenv( "HTTP_USER_AGENT" );
  echo( "Browser details:<br>$viewer" );
 ?>
 </body>
</html>



Reporting the User Agent and Referrer

 
<html>
<head>
<title>Reporting User Agent and Referrer</title>
</head>
<body>
<div>
<p>
Browser: <b><?php print $_SERVER["HTTP_USER_AGENT"] ?></b><br />
Referring page: <b><?php print $_SERVER["HTTP_REFERER"] ?></b>
</p>
</div>
</body>
</html>



Welcome Page with HTTP_USER_AGENT

 
<html>
 <head>
  <title>Welcome Page</title>
 </head>
 
 <body>
 <center>
 <?php
  $browser = $_SERVER["HTTP_USER_AGENT"];
  if( preg_match( "/Pixo/i", "$browser" ) )
  {
    $img = "<img src=\"small-tux.gif\" ";
    $img.= "width=\"64\" height=\"75\" ";
    $img.= " alt=\"tux\" >";
  }
  else
  {
    $img = "<img src=\"large-tux.gif\" ";
    $img.= " width=\"320\" height=\"375\" ";
    $img.= " alt=\"tux\" >";
  }
  echo( $img );
 ?>
    
 </center>
 </body>
</html>
Источник — «http://wbex.ru/index.php?title=PHP/HTML/HTTP_USER_AGENT&oldid=859»