数组的字符串路径

Question

我想将HTML样式的表单数组转换为PHP数组。 我尝试了很多解决方案，但我只得到错误或引用（“指针”）问题。

HTML数组pathes的格式如下：

• tree[]
• tree2[key1]
• tree2[key2][key3]
• tree3[][key4]

这是构建数组的方法，我删除了不起作用的代码（因为它只是垃圾）：

private function addFieldToBag(BagCollectionInterface $bag, $name, $content)
{
    # The field is not an array component
    if(!$firstKey = strpos($name, '['))
    {
        $bag->add($name, $content);
    }
    # The field is part of an array (eg. "tree[key][]")
    else
    {
        preg_match_all('/(?:\\[(\\w*)\\])/', $name, $treeComponents);
        # $treeComponents[1] = ['key', ''], will be used to build the array

        $treeRootName = substr($name, 0, $firstKey);
        # $treeRootName = 'tree'

        # eg. "tree" array doesn't exists yet 
        if(!array_key_exists($treeRootName, $bag->all()))
        {
            $treeRoot = [];
        }
        else
        {
            $treeRoot = $bag->get($treeRootName);
        }

        # Here I want to build the array using :
        # $treeRoot as the array root, containing data or not.
        # $treeComponents[1] as the path to build
        # $content as the final scalar value of the path
        # eg. on tree[][key] with value of 'scalarValue':
        # $treeRoot = [
        #   0 => [
        #       key => scalarValue
        #   ]
        # ]

        # Reassignation of the array to the bag,
        # because I can not modify the array returned by $bag->get(name); :(
        $bag->add($treeRootName, $treeRoot);
    }
}

我很失落，谢谢你的帮助。