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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 |
|---|---|
| 180 | * Output content of a custom Site Health tab. |
| 181 | * |
| 182 | * This action fires right after the Site Health header, and users are still subject to |
| 183 | * the capability checks for the Site Health page to view any custom tabs and their contents. |
| 184 | * |
| 185 | * @since 5.8.0 |
| 186 | * |
| 187 | * @param string $tab The slug of the tab that was requested. |
| 188 | */ |
| 189 | do_action( 'site_health_tab_content', $_GET['tab'] ); |
| 190 | |
| 191 | require_once ABSPATH . 'wp-admin/admin-footer.php'; |
| 192 | return; |
| 193 | } else { |
| 194 | ?> |
| 195 | |
| 196 | <div class="notice notice-error hide-if-js"> |
| 197 | <p><?php _e( 'The Site Health check requires JavaScript.' ); ?></p> |
| 198 | </div> |