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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 |
|---|---|
| 211 | * Fires when outputting the content of a custom Site Health tab. |
| 212 | * |
| 213 | * This action fires right after the Site Health header, and users are still subject to |
| 214 | * the capability checks for the Site Health page to view any custom tabs and their contents. |
| 215 | * |
| 216 | * @since 5.8.0 |
| 217 | * |
| 218 | * @param string $tab The slug of the tab that was requested. |
| 219 | */ |
| 220 | do_action( 'site_health_tab_content', $_GET['tab'] ); |
| 221 | |
| 222 | require_once ABSPATH . 'wp-admin/admin-footer.php'; |
| 223 | return; |
| 224 | } else { |
| 225 | wp_admin_notice( |
| 226 | __( 'The Site Health check requires JavaScript.' ), |
| 227 | array( |
| 228 | 'type' => 'error', |
| 229 | 'additional_classes' => array( 'hide-if-js' ), |