Comma separated list of child category ids?

  • HI guys.

    i want to exclude a certaing category from my index page. The category has got about 30 children categories. Obviously i dont want to type in by hand so how can i use get_categories() to get them?

    ‘category__not_in’ => array(get_categories(‘child_of=25’));

    well its not too good yet since it gives back and array, doesnt it? thanks

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