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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 |
|---|---|
| 386 | |
| 387 | /* |
| 388 | * The following hooks are fired to ensure backward compatibility. |
| 389 | * In all other cases, 'load-' . $pagenow should be used instead. |
| 390 | */ |
| 391 | if ( 'page' === $typenow ) { |
| 392 | if ( 'post-new.php' === $pagenow ) { |
| 393 | do_action( 'load-page-new.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 394 | } elseif ( 'post.php' === $pagenow ) { |
| 395 | do_action( 'load-page.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 396 | } |
| 397 | } elseif ( 'edit-tags.php' === $pagenow ) { |
| 398 | if ( 'category' === $taxnow ) { |
| 399 | do_action( 'load-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 400 | } elseif ( 'link_category' === $taxnow ) { |
| 401 | do_action( 'load-edit-link-categories.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 402 | } |
| 403 | } elseif ( 'term.php' === $pagenow ) { |
| 404 | do_action( 'load-edit-tags.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |