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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 |
|---|---|
| 2116 | |
| 2117 | /** |
| 2118 | * Fires after the permalink structure is updated. |
| 2119 | * |
| 2120 | * @since 2.8.0 |
| 2121 | * |
| 2122 | * @param string $old_permalink_structure The previous permalink structure. |
| 2123 | * @param string $permalink_structure The new permalink structure. |
| 2124 | */ |
| 2125 | do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure ); |
| 2126 | } |
| 2127 | } |
| 2128 | |
| 2129 | /** |
| 2130 | * Set the category base for the category permalink. |
| 2131 | * |
| 2132 | * Will update the 'category_base' option, if there is a difference between |
| 2133 | * the current category base and the parameter value. Calls |
| 2134 | * {@link WP_Rewrite::init()} after the option is updated. |