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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 |
---|---|
4301 | * Returning a truthy value from the filter will effectively short-circuit |
4302 | * the new post being inserted and return 0. If $wp_error is true, a WP_Error |
4303 | * will be returned instead. |
4304 | * |
4305 | * @since 3.3.0 |
4306 | * |
4307 | * @param bool $maybe_empty Whether the post should be considered "empty". |
4308 | * @param array $postarr Array of post data. |
4309 | */ |
4310 | if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) { |
4311 | if ( $wp_error ) { |
4312 | return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) ); |
4313 | } else { |
4314 | return 0; |
4315 | } |
4316 | } |
4317 |
|
4318 | $post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status']; |
4319 |
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