Limit results to current page children

​What is this, and where do I put this custom code?​
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add_filter('asp_query_args', 'asp_add_current_parent_dependency', 10, 1);
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function asp_add_current_parent_dependency($args) {
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  if ( !empty($args['_page_id']) ) {
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    $args['post_parent'][] = $args['_page_id'];
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    $args['post_parent'] = array_unique($args['post_parent']);
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  }
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  return $args;
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}
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..same code, but to apply only for specific search instances:
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add_filter('asp_query_args', 'asp_add_current_parent_dependency', 10, 2);
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function asp_add_current_parent_dependency( $args, $id ) {
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  /**
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   * Search instance IDs you want this code to apply on.
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   */
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  $search_ids = array(1, 2);     
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  // -- !! Do not change anything below this line !! --
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  // --------------------------------------------------
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  if ( !empty($args['_page_id']) && in_array($id, $search_ids) ) {
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    $args['post_parent'][] = $args['_page_id'];
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    $args['post_parent'] = array_unique($args['post_parent']);
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  }
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  return $args;
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}
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Limiting results to specific posts by parent ID

Excluding posts or CPT by parent ID(s)

Last modified 1yr ago

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