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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 |
|---|---|
| 1122 | $this->query_vars_changed = false; |
| 1123 | |
| 1124 | /** |
| 1125 | * Fires after the main query vars have been parsed. |
| 1126 | * |
| 1127 | * @since 1.5.0 |
| 1128 | * |
| 1129 | * @param WP_Query $query The WP_Query instance (passed by reference). |
| 1130 | */ |
| 1131 | do_action_ref_array( 'parse_query', array( &$this ) ); |
| 1132 | } |
| 1133 | |
| 1134 | /** |
| 1135 | * Parses various taxonomy related query vars. |
| 1136 | * |
| 1137 | * For BC, this method is not marked as protected. See [28987]. |
| 1138 | * |
| 1139 | * @since 3.1.0 |
| 1140 | * |