如何在PHP中操作foreach()循环中的砖石结构

function processDiamondStructure($data) {
    foreach ($data as $key => $value) {
        if (is_array($value)) {
            processDiamondStructure($value); // 递归调用处理嵌套数组
        } else {
            // 在这里对每个元素进行操作
            echo "Key: " . $key . ", Value: " . $value . "<br>";
        }
    }
}

$data = array(
    "key1" => "value1",
    "key2" => array(
        "subkey1" => "subvalue1",
        "subkey2" => array(
            "subsubkey1" => "subsubvalue1",
            "subsubkey2" => "subsubvalue2"
        )
    ),
    "key3" => "value3"
);

processDiamondStructure($data);