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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 |
|---|---|
| 2034 | $this->tax_query = new WP_Tax_Query( $tax_query ); |
| 2035 | |
| 2036 | /** |
| 2037 | * Fires after taxonomy-related query vars have been parsed. |
| 2038 | * |
| 2039 | * @since 3.7.0 |
| 2040 | * |
| 2041 | * @param WP_Query $this The WP_Query instance. |
| 2042 | */ |
| 2043 | do_action( 'parse_tax_query', $this ); |
| 2044 | } |
| 2045 | |
| 2046 | /** |
| 2047 | * Generate SQL for the WHERE clause based on passed search terms. |
| 2048 | * |
| 2049 | * @since 3.7.0 |
| 2050 | * |
| 2051 | * @global wpdb $wpdb |
| 2052 | * @param array $q Query variables. |