protected function setHeader($name, $value)
	{
		if (!is_array($value)) {
			$value = [$value];
		}

		$this->headerNames[strtolower($name)] = $name;
		array_merge($this->headers[$name] = $value);

		return $this;
	}
protected function setHeader($name, $value)
	{
		if (!is_array($value)) {
			$value = [$value];
		}

		$this->headerNames[strtolower($name)] = $name;
		array_merge($this->headers[$name] = $value);

		return $this;
	}
protected function setHeader ( $ name , $ value ) { if ( ! is_array ( $ value ) ) { $ value = [ $ value ] ; } $ this -> headerNames [ strtolower ( $ name ) ] = $ name ; array_merge ( $ this -> headers [ $ name ] = $ value ) ; return $ this ; }
Set the header.

@param string $name
@param string|string[] $value
@return $this
Set the header .