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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 |
---|---|
3749 | * Returning a truthy value from the filter will effectively short-circuit |
3750 | * the new post being inserted and return 0. If $wp_error is true, a WP_Error |
3751 | * will be returned instead. |
3752 | * |
3753 | * @since 3.3.0 |
3754 | * |
3755 | * @param bool $maybe_empty Whether the post should be considered "empty". |
3756 | * @param array $postarr Array of post data. |
3757 | */ |
3758 | if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) { |
3759 | if ( $wp_error ) { |
3760 | return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) ); |
3761 | } else { |
3762 | return 0; |
3763 | } |
3764 | } |
3765 |
|
3766 | $post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status']; |
3767 |
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