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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 |
|---|---|
| 1299 | $this->tax_query = new WP_Tax_Query( $tax_query ); |
| 1300 | |
| 1301 | /** |
| 1302 | * Fires after taxonomy-related query vars have been parsed. |
| 1303 | * |
| 1304 | * @since 3.7.0 |
| 1305 | * |
| 1306 | * @param WP_Query $this The WP_Query instance. |
| 1307 | */ |
| 1308 | do_action( 'parse_tax_query', $this ); |
| 1309 | } |
| 1310 | |
| 1311 | /** |
| 1312 | * Generates SQL for the WHERE clause based on passed search terms. |
| 1313 | * |
| 1314 | * @since 3.7.0 |
| 1315 | * |
| 1316 | * @global wpdb $wpdb WordPress database abstraction object. |
| 1317 | * |