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<?php public static function getUserAgent() { static $agent = null; if ( empty($agent) ) { $agent = $_SERVER['HTTP_USER_AGENT']; if ( stripos($agent, 'Firefox') !== false ) { $agent = 'firefox'; } elseif ( stripos($agent, 'MSIE') !== false ) { $agent = 'ie'; } elseif ( stripos($agent, 'iPad') !== false ) { $agent = 'ipad'; } elseif ( stripos($agent, 'Android') !== false ) { $agent = 'android'; } elseif ( stripos($agent, 'Chrome') !== false ) { $agent = 'chrome'; } elseif ( stripos($agent, 'Safari') !== false ) { $agent = 'safari'; } elseif ( stripos($agent, 'AIR') !== false ) { $agent = 'air'; } elseif ( stripos($agent, 'Fluid') !== false ) { $agent = 'fluid'; } } return $agent; } echo getUserAgent(); ?>