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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 |
---|---|
1910 | 'taxonomy' => 'post_tag', |
1911 | 'terms' => $q['tag_slug__and'], |
1912 | 'field' => 'slug', |
1913 | 'operator' => 'AND' |
1914 | ); |
1915 | } |
1916 |
|
1917 | $this->tax_query = new WP_Tax_Query( $tax_query ); |
1918 |
|
1919 | do_action( 'parse_tax_query', $this ); |
1920 | } |
1921 |
|
1922 | /** |
1923 | * Generate SQL for the WHERE clause based on passed search terms. |
1924 | * |
1925 | * @since 3.7.0 |
1926 | * |
1927 | * @global wpdb $wpdb |
1928 | * @param array $q Query variables. |