Get the given header

Unlike self::getValues(), this returns a string. If there are multiple values, it concatenates them with a comma as per RFC2616.

Avoid using this where commas may be used unquoted in values, such as Set-Cookie headers.

$key string Required

string|null Header value

File: wp-includes/Requests/Response/Headers.php. View all references

public function offsetGet($key) {
	$key = strtolower($key);
	if (!isset($this->data[$key])) {
		return null;
	}

	return $this->flatten($this->data[$key]);
}