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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 |
|---|---|
| 3602 | * Filters whether a post trashing should take place. |
| 3603 | * |
| 3604 | * @since 4.9.0 |
| 3605 | * @since 6.3.0 Added the `$previous_status` parameter. |
| 3606 | * |
| 3607 | * @param bool|null $trash Whether to go forward with trashing. |
| 3608 | * @param WP_Post $post Post object. |
| 3609 | * @param string $previous_status The status of the post about to be trashed. |
| 3610 | */ |
| 3611 | $check = apply_filters( 'pre_trash_post', null, $post, $previous_status ); |
| 3612 | |
| 3613 | if ( null !== $check ) { |
| 3614 | return $check; |
| 3615 | } |
| 3616 | |
| 3617 | /** |
| 3618 | * Fires before a post is sent to the Trash. |
| 3619 | * |
| 3620 | * @since 3.3.0 |