function MessageInterface::getHeaderLine
Retrieves a comma-separated string of the values for a single header.
This method returns all of the header values of the given case-insensitive header name as a string concatenated together using a comma.
NOTE: Not all header values may be appropriately represented using comma concatenation. For such headers, use getHeader() instead and supply your own delimiter when concatenating.
If the header does not appear in the message, this method MUST return an empty string.
Parameters
string $name Case-insensitive header field name.:
Return value
string A string of values as provided for the given header concatenated together using a comma. If the header does not appear in the message, this method MUST return an empty string.
File
-
vendor/
psr/ http-message/ src/ MessageInterface.php, line 115
Class
- MessageInterface
- HTTP messages consist of requests from a client to a server and responses from a server to a client. This interface defines the methods common to each.
Namespace
Psr\Http\MessageCode
public function getHeaderLine(string $name) : string;