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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 |
|---|---|
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * Fires before an importer screen is loaded. |
| 320 | * |
| 321 | * The dynamic portion of the hook name, `$importer`, refers to the importer slug. |
| 322 | * |
| 323 | * @since 3.5.0 |
| 324 | */ |
| 325 | do_action( "load-importer-{$importer}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 326 | |
| 327 | $parent_file = 'tools.php'; |
| 328 | $submenu_file = 'import.php'; |
| 329 | $title = __( 'Import' ); |
| 330 | |
| 331 | if ( ! isset( $_GET['noheader'] ) ) { |
| 332 | require_once ABSPATH . 'wp-admin/admin-header.php'; |
| 333 | } |
| 334 | |