Bluz\Response\Response::hasHeader
Checks if a header exists by the given case-insensitive name
Signature
public function hasHeader(string
$header )
Parameters
$header
— string- case-insensitive header name.
Returns
- bool
- returns true if any header names match the given header
name using a case-insensitive string comparison. Returns false if no matching header name is found in the message.