php 源码分享之获取客户端操作系统类型和浏览器类型

PHP源代码如下：

<?
function browser_info ($agent) {
     if (ereg( \'MSIE ([09].[09]{1,2})\', $agent, $version)) :
          $browse_type = \"IE\";
          $browse_version = $version[1];
     elseif (ereg( \'Opera ([09].[09]{1,2})\', $agent, $version)) :
          $browse_type = \"Opera\";
          $browse_version = $version[1];
     elseif (ereg( \'Mozilla/([09].[09]{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;

}
$HTTP_USER_AGENT=getenv( \"HTTP_USER_AGENT\" );
list ($browse_type, $browse_version) = browser_info ($HTTP_USER_AGENT);
$operating_sys = operatingsystem_info ($HTTP_USER_AGENT);

print \"浏览器类型: $browse_type <br>\";
print \"浏览器版本: $browse_version <br>\";
print \"操作系统类型: $operating_sys <br>\";

?>

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