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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 |
---|---|
2799 |
|
2800 | /** |
2801 | * Filters whether a post trashing should take place. |
2802 | * |
2803 | * @since 4.9.0 |
2804 | * |
2805 | * @param bool $trash Whether to go forward with trashing. |
2806 | * @param WP_Post $post Post object. |
2807 | */ |
2808 | $check = apply_filters( 'pre_trash_post', null, $post ); |
2809 | if ( null !== $check ) { |
2810 | return $check; |
2811 | } |
2812 |
|
2813 | /** |
2814 | * Fires before a post is sent to the trash. |
2815 | * |
2816 | * @since 3.3.0 |
2817 | * |