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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1673 | |
| 1674 | /** |
| 1675 | * Filters post data array to be inserted via XML-RPC. |
| 1676 | * |
| 1677 | * @since 3.4.0 |
| 1678 | * |
| 1679 | * @param array $post_data Parsed array of post data. |
| 1680 | * @param array $content_struct Post data array. |
| 1681 | */ |
| 1682 | $post_data = apply_filters( 'xmlrpc_wp_insert_post_data', $post_data, $content_struct ); |
| 1683 | |
| 1684 | // Remove all null values to allow for using the insert/update post default values for those keys instead. |
| 1685 | $post_data = array_filter( |
| 1686 | $post_data, |
| 1687 | static function ( $value ) { |
| 1688 | return null !== $value; |
| 1689 | } |
| 1690 | ); |
| 1691 | |