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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 |
|---|---|
| 170 | * |
| 171 | * @since 4.9.0 |
| 172 | * |
| 173 | * @param bool|WP_Error $retval True if the user should be added to the site, false |
| 174 | * or error object otherwise. |
| 175 | * @param int $user_id User ID. |
| 176 | * @param string $role User role. |
| 177 | * @param int $blog_id Site ID. |
| 178 | */ |
| 179 | $can_add_user = apply_filters( 'can_add_user_to_blog', true, $user_id, $role, $blog_id ); |
| 180 | |
| 181 | if ( true !== $can_add_user ) { |
| 182 | restore_current_blog(); |
| 183 | |
| 184 | if ( is_wp_error( $can_add_user ) ) { |
| 185 | return $can_add_user; |
| 186 | } |
| 187 | |
| 188 | return new WP_Error( 'user_cannot_be_added', __( 'User cannot be added to this site.' ) ); |