Check is category parent or not from its ID

question is simple (i don’t know is aswer too 😉
I just want to check that, does a category has child (or is ancestor) from its cat-id with a function.
Eg.
function check_category ($catid){
............
...//true if is ancestor, false if not
return $result;
}


Note: I can only pass cat-id parameter for function because i need to use it in functions.php
Thanks in advance…

You can do something like this:

function category_has_parent($catid){
    $category = get_category($catid);
    if ($category->category_parent > 0){
        return true;
    }
    return false;
}

and use it like this:

if (category_has_parent('22')){
   //true there is a parent category
}else{
   //false this category has no parent
}

Update:

to check the other way around (if a category has children) you can use get_categories

$children = get_categories(array('child_of' => id,'hide_empty' => 0));
if (count($children) > 1){
    //has childern
}else{
    //no children
}