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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 |
|---|---|
| 67 | $args = wp_parse_args( $args, $defaults ); |
| 68 | |
| 69 | /** |
| 70 | * Fires at the beginning of an export, before any headers are sent. |
| 71 | * |
| 72 | * @since 2.3.0 |
| 73 | * |
| 74 | * @param array $args An array of export arguments. |
| 75 | */ |
| 76 | do_action( 'export_wp', $args ); |
| 77 | |
| 78 | $sitename = sanitize_key( get_bloginfo( 'name' ) ); |
| 79 | if ( ! empty( $sitename ) ) { |
| 80 | $sitename .= '.'; |
| 81 | } |
| 82 | $date = gmdate( 'Y-m-d' ); |
| 83 | $wp_filename = $sitename . 'WordPress.' . $date . '.xml'; |
| 84 | /** |
| 85 | * Filters the export filename. |