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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 |
---|---|
3430 | if ( empty( $post->comment_status ) ) { |
3431 |
|
3432 | /** |
3433 | * Fires when a comment is attempted on a post that does not exist. |
3434 | * |
3435 | * @since 1.5.0 |
3436 | * |
3437 | * @param int $comment_post_ID Post ID. |
3438 | */ |
3439 | do_action( 'comment_id_not_found', $comment_post_ID ); |
3440 |
|
3441 | return new WP_Error( 'comment_id_not_found' ); |
3442 |
|
3443 | } |
3444 |
|
3445 | // get_post_status() will get the parent status for attachments. |
3446 | $status = get_post_status( $post ); |
3447 |
|
3448 | if ( ( 'private' === $status ) && ! current_user_can( 'read_post', $comment_post_ID ) ) { |