Title: AtomParser::start_ns
Published: April 25, 2014
Last modified: February 24, 2026

---

# AtomParser::start_ns( $parser,  $prefix,  $uri )

## In this article

 * [Source](https://developer.wordpress.org/reference/classes/atomparser/start_ns/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/atomparser/start_ns/?output_format=md#related)

[ Back to top](https://developer.wordpress.org/reference/classes/atomparser/start_ns/?output_format=md#wp--skip-link--target)

## 󠀁[Source](https://developer.wordpress.org/reference/classes/atomparser/start_ns/?output_format=md#source)󠁿

    ```php
    function start_ns($parser, $prefix, $uri) {
        $this->_p("starting: " . $prefix . ":" . $uri);
        array_push($this->ns_decls, array($prefix,$uri));
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/atomlib.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/atomlib.php#L333)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/atomlib.php#L333-L336)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/atomparser/start_ns/?output_format=md#related)󠁿

| Uses | Description | 
| [AtomParser::_p()](https://developer.wordpress.org/reference/classes/atomparser/_p/)`wp-includes/atomlib.php` |  |

## User Contributed Notes

You must [log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Fclasses%2Fatomparser%2Fstart_ns%2F)
before being able to contribute a note or feedback.