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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 |
---|---|
90 | function wp_terms_checklist($post_id = 0, $args = array()) { |
91 | $defaults = array( |
92 | 'descendants_and_self' => 0, |
93 | 'selected_cats' => false, |
94 | 'popular_cats' => false, |
95 | 'walker' => null, |
96 | 'taxonomy' => 'category', |
97 | 'checked_ontop' => true |
98 | ); |
99 | $args = apply_filters( 'wp_terms_checklist_args', $args, $post_id ); |
100 |
|
101 | extract( wp_parse_args($args, $defaults), EXTR_SKIP ); |
102 |
|
103 | if ( empty($walker) || !is_a($walker, 'Walker') ) |
104 | $walker = new Walker_Category_Checklist; |
105 |
|
106 | $descendants_and_self = (int) $descendants_and_self; |
107 |
|
108 | $args = array('taxonomy' => $taxonomy); |