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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 |
|---|---|
| 2265 | |
| 2266 | /** |
| 2267 | * Fires after the permalink structure is updated. |
| 2268 | * |
| 2269 | * @since 2.8.0 |
| 2270 | * |
| 2271 | * @param string $old_permalink_structure The previous permalink structure. |
| 2272 | * @param string $permalink_structure The new permalink structure. |
| 2273 | */ |
| 2274 | do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure ); |
| 2275 | } |
| 2276 | } |
| 2277 | |
| 2278 | /** |
| 2279 | * Set the category base for the category permalink. |
| 2280 | * |
| 2281 | * Will update the 'category_base' option, if there is a difference between |
| 2282 | * the current category base and the parameter value. Calls |
| 2283 | * {@link WP_Rewrite::init()} after the option is updated. |