public static function header($headers)
    {
        if (is_array($headers)) {
            // if pass array
            foreach ($headers as $header) {
                if (FALSE === Http::header($header)) {
                    throw new \InvalidArgumentException("Header $header is invalid!");
                }
            }
            return;
        }
        // pass string
        if (FALSE === Http::header($headers)) {
            throw new \InvalidArgumentException("Header $headers is invalid!");
        }
    }
public static function header($headers)
    {
        if (is_array($headers)) {
            // if pass array
            foreach ($headers as $header) {
                if (FALSE === Http::header($header)) {
                    throw new \InvalidArgumentException("Header $header is invalid!");
                }
            }
            return;
        }
        // pass string
        if (FALSE === Http::header($headers)) {
            throw new \InvalidArgumentException("Header $headers is invalid!");
        }
    }
public static function header ( $ headers ) { if ( is_array ( $ headers ) ) { // if pass array foreach ( $ headers as $ header ) { if ( FALSE === Http :: header ( $ header ) ) { throw new \ InvalidArgumentException ( "Header $header is invalid!" ) ; } } return ; } // pass string if ( FALSE === Http :: header ( $ headers ) ) { throw new \ InvalidArgumentException ( "Header $headers is invalid!" ) ; } }
create http response header.

@param  mixed  $header array or string
@return void
create http response header .