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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 |
|---|---|
| 1870 | $this->query_vars_changed = false; |
| 1871 | |
| 1872 | /** |
| 1873 | * Fires after the main query vars have been parsed. |
| 1874 | * |
| 1875 | * @since 1.5.0 |
| 1876 | * |
| 1877 | * @param WP_Query &$this The WP_Query instance (passed by reference). |
| 1878 | */ |
| 1879 | do_action_ref_array( 'parse_query', array( &$this ) ); |
| 1880 | } |
| 1881 | |
| 1882 | /** |
| 1883 | * Parses various taxonomy related query vars. |
| 1884 | * |
| 1885 | * For BC, this method is not marked as protected. See [28987]. |
| 1886 | * |
| 1887 | * @access protected |
| 1888 | * @since 3.1.0 |