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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 |
|---|---|
| 219 | * |
| 220 | * Plugins should amend the `$errors` object via its `WP_Error::add()` method. If any errors |
| 221 | * are present, the site will not be deleted. |
| 222 | * |
| 223 | * @since 5.1.0 |
| 224 | * |
| 225 | * @param WP_Error $errors Error object to add validation errors to. |
| 226 | * @param WP_Site $old_site The site object to be deleted. |
| 227 | */ |
| 228 | do_action( 'wp_validate_site_deletion', $errors, $old_site ); |
| 229 | |
| 230 | if ( ! empty( $errors->errors ) ) { |
| 231 | return $errors; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Fires before a site is deleted. |
| 236 | * |
| 237 | * @since MU (3.0.0) |