setFormat(string $format, string|array $mimeTypes) Associates a format with mime types.

bool hasCacheControlDirective(string $key) Returns true if the Cache-Control directive is defined

static AcceptHeader fromString(string

BinaryFileResponse

bool hasSession() Whether the request contains a Session object. This method does not

setDefaultLocale(string $locale) Sets the default locale.

AcceptHeaderItem setIndex(int

array all() Returns the headers. Return

setExpression(ExpressionLanguage

string getAlpha(string $key, string $default = '') Returns the alphabetic characters of the parameter