调试信息“当前字符集:utf8”来自何处?

当我在index.php(slim)脚本中回显某些东西时,它总是首先出现 .

我真的变得绝望试图压制这个 .

可能是由.htaccess规则引起的吗?

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ %{ENV:BASE}index.php [QSA,L]

在这里我的设置:

服务器:Apache / 2.4.9(Win32)OpenSSL / 1.0.1g PHP / 5.5.11 X-Powered-By:PHP / 5.5.11 User-Agent:Mozilla / 5.0(Windows NT 6.1; WOW64)AppleWebKit / 537.36(KHTML ,像Gecko)Chrome / 37.0.2062.124 Safari / 537.36

index.php的相关部分:

function echoRespnse($status_code, $response) {
$app = \Slim\Slim::getInstance();
// Http response code
$app->status($status_code);
$app->config('debug', false);

// setting response content type to json
$app->contentType('application/json');
//$app->response()->header('Content-Type', 'application/json');

echo json_encode($response);
}

任何帮助将不胜感激