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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 |
|---|---|
| 197 | * |
| 198 | * Plugins should amend the `$errors` object via its `WP_Error::add()` method. If any errors |
| 199 | * are present, the site will not be deleted. |
| 200 | * |
| 201 | * @since 5.1.0 |
| 202 | * |
| 203 | * @param WP_Error $errors Error object to add validation errors to. |
| 204 | * @param WP_Site $old_site The site object to be deleted. |
| 205 | */ |
| 206 | do_action( 'wp_validate_site_deletion', $errors, $old_site ); |
| 207 | |
| 208 | if ( ! empty( $errors->errors ) ) { |
| 209 | return $errors; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Fires before a site is deleted. |
| 214 | * |
| 215 | * @since MU (3.0.0) |