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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 |
|---|---|
| 2100 | $this->tax_query = new WP_Tax_Query( $tax_query ); |
| 2101 | |
| 2102 | /** |
| 2103 | * Fires after taxonomy-related query vars have been parsed. |
| 2104 | * |
| 2105 | * @since 3.7.0 |
| 2106 | * |
| 2107 | * @param WP_Query $this The WP_Query instance. |
| 2108 | */ |
| 2109 | do_action( 'parse_tax_query', $this ); |
| 2110 | } |
| 2111 | |
| 2112 | /** |
| 2113 | * Generate SQL for the WHERE clause based on passed search terms. |
| 2114 | * |
| 2115 | * @since 3.7.0 |
| 2116 | * |
| 2117 | * @global wpdb $wpdb WordPress database abstraction object. |
| 2118 | * |