下面的代碼驗證用戶代理訪問該網站,但是我正在錯誤。我需要更新以適應沒有設置用戶代理的場景。PHP未定義指數:HTTP_USER_AGENT
ERROR PHP說明:未定義指數:HTTP_USER_AGENT在utils.php中第7行
CODE
public static function detectBrowser()
{
$userAgent = strtolower($_SERVER['HTTP_USER_AGENT']);
if (preg_match('/opera/', $userAgent)) {
$name = 'opera';
}
elseif (preg_match('/webkit/', $userAgent)) {
$name = 'safari';
}
elseif (preg_match('/msie/', $userAgent)) {
$name = 'msie';
}
elseif (preg_match('/mozilla/', $userAgent) && !preg_match('/compatible/', $userAgent)) {
$name = 'mozilla';
}
else {
$name = 'unrecognized';
}
if (preg_match('/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/', $userAgent, $matches)) {
$version = $matches[1];
}
else {
$version = 'unknown';
}
if (preg_match('/linux/', $userAgent)) {
$platform = 'linux';
}
elseif (preg_match('/macintosh|mac os x/', $userAgent)) {
$platform = 'mac';
}
elseif (preg_match('/windows|win32/', $userAgent)) {
$platform = 'windows';
}
else {
$platform = 'unrecognized';
}
return array(
'name' => $name,
'version' => $version,
'platform' => $platform,
'userAgent' => $userAgent
);
}
漂亮與巨大的'else'塊IMO – ThiefMaster
我知道難看,但這不是問題。 –