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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 |
---|---|
150 | * Filter the taxonomy terms checklist arguments. |
151 | * |
152 | * @since 3.4.0 |
153 | * |
154 | * @see wp_terms_checklist() |
155 | * |
156 | * @param array $args An array of arguments. |
157 | * @param int $post_id The post ID. |
158 | */ |
159 | $args = apply_filters( 'wp_terms_checklist_args', $args, $post_id ); |
160 |
|
161 | extract( wp_parse_args($args, $defaults), EXTR_SKIP ); |
162 |
|
163 | if ( empty($walker) || !is_a($walker, 'Walker') ) |
164 | $walker = new Walker_Category_Checklist; |
165 |
|
166 | $descendants_and_self = (int) $descendants_and_self; |
167 |
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168 | $args = array('taxonomy' => $taxonomy); |