How does PHPCMS determine whether the column contains sub-columns?

PHPCMS How to determine whether this column contains sub-columns?

1. Directly determine "child" in the data of this column. If it is true, it contains sub-columns;

if ($cate['child']) {
    echo "有子栏目";
} else {
    echo "没有子栏目";
}

2. First determine whether the data exists, and if it exists, then determine whether Is empty, if both are true, it contains sub-columns.

if (isset($cate['child']) && !empty($cate['child'])) {
    echo "有子栏目";
} else {
    echo "没有子栏目";
}

Recommended tutorial: "PHPCMS Tutorial"

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