Format my JSON string into an ordered list in PHP

Question

I\'m working on a simple CMS for a pet project. I currently have a JSON string that contains a list of page ID\'s and Parent page ID\'s for a menu structure.

I want to n

Answer 1

You can use recursion to get deep inside the data. If the current value is an array then recursion again. Consider this example:

$json_string = '[{"id":3,"children":[{"id":4,"children":[{"id":5}]}]},{"id":6},{"id":2},{"id":4}]';
$array = json_decode($json_string, true);

function build_list($array) {
    $list = '
';
    foreach($array as $key => $value) {
        foreach($value as $key => $index) {
            if(is_array($index)) {
                $list .= build_list($index);
            } else {
                $list .= "
$index
";
            }
        }
    }

    $list .= '
';
    return $list;
}

echo build_list($array);