getHeaderName example

    public function getHeader(string $name)
    {
        return $this->header($name);
    }

    /** * Determines whether a header exists. */
    public function hasHeader(string $name): bool
    {
        $origName = $this->getHeaderName($name);

        return isset($this->headers[$origName]);
    }

    /** * 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. */

/** * Returns a single Header object. If multiple headers with the same * name exist, then will return an array of header objects. * * @param string $name * * @return array|Header|null */
    public function header($name)
    {
        $origName = $this->getHeaderName($name);

        return $this->headers[$origName] ?? null;
    }

    /** * Sets a header and it's value. * * @param array|string|null $value * * @return $this */
    

}

if (! function_exists('csrf_header')) {
    /** * Returns the CSRF header name. * Can be used in Views by adding it to the meta tag * or used in javascript to define a header name when using APIs. */
    function csrf_header(): string
    {
        return Services::security()->getHeaderName();
    }
}

if (! function_exists('csrf_hash')) {
    /** * Returns the current hash value for the CSRF protection. * Can be used in Views when building hidden inputs manually, * or used in javascript vars for API usage. */
    function csrf_hash(): string
    {