/**
* Return an instance without the specified header.
*
* Header resolution MUST be done without case-sensitivity.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that removes
* the named header.
*
* @param string $name Case-insensitive header field name to remove.
* @return static
*/
public function withoutHeader($name)
{
$name = strtoupper($name);
if (!$this->hasHeader($name)) {
return $this;
}
$this->header->remove($name);
return $this;
}
public function testToStringFoHeaderBag()
{
$headerBag = new HeaderBag(['X-Session-Id' => '111']);
$this->assertEquals('X-Session-Id: 111' . "\r\n", (string) $headerBag);
$headerBag->set('name', 'jan');
}