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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 |
|---|---|
| 1336 | $this->tax_query = new WP_Tax_Query( $tax_query ); |
| 1337 | |
| 1338 | /** |
| 1339 | * Fires after taxonomy-related query vars have been parsed. |
| 1340 | * |
| 1341 | * @since 3.7.0 |
| 1342 | * |
| 1343 | * @param WP_Query $query The WP_Query instance. |
| 1344 | */ |
| 1345 | do_action( 'parse_tax_query', $this ); |
| 1346 | } |
| 1347 | |
| 1348 | /** |
| 1349 | * Generates SQL for the WHERE clause based on passed search terms. |
| 1350 | * |
| 1351 | * @since 3.7.0 |
| 1352 | * |
| 1353 | * @global wpdb $wpdb WordPress database abstraction object. |
| 1354 | * |