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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 |
|---|---|
| 1948 | |
| 1949 | /** |
| 1950 | * Fires after the permalink structure is updated. |
| 1951 | * |
| 1952 | * @since 2.8.0 |
| 1953 | * |
| 1954 | * @param string $old_permalink_structure The previous permalink structure. |
| 1955 | * @param string $permalink_structure The new permalink structure. |
| 1956 | */ |
| 1957 | do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure ); |
| 1958 | } |
| 1959 | } |
| 1960 | |
| 1961 | /** |
| 1962 | * Sets the category base for the category permalink. |
| 1963 | * |
| 1964 | * Will update the 'category_base' option, if there is a difference between |
| 1965 | * the current category base and the parameter value. Calls WP_Rewrite::init() |
| 1966 | * after the option is updated. |