如何使用Codeigniter在PHP中获取数组内部的数组？

如何获取

web\u hi\u res\u 512.png

值

Array ( 
  [upload_data] => 
    Array ( [file_name] => web_hi_res_51216.png
            [file_type] => image/png 
            [file_path] => C:/xampp/htdocs/elearning/uploads/ 
            [full_path] => C:/xampp/htdocs/elearning/uploads/web_hi_res_51216.png 
            [raw_name]  => web_hi_res_51216 [orig_name] => web_hi_res_512.png 
            [client_name] => web_hi_res_512.png [file_ext] => .png [file_size] => 84.94 
            [is_image]  => 1 
            [image_width] => 512 
            [image_height] => 512 
            [image_type] => png 
            [image_size_str] => width="512" height="512"
    ) 
)

你可以这样做

---

如果将此数组分配给变量$array，则可以得到如下结果：

echo $array['upload_data']['file_name'];

---

如果将此数组分配给变量$array：

echo $array['upload_data']['file_name'];

您可以像下面这样访问它

echo $array['upload_data']['filename'];

您可以像下面这样访问它

echo $array['upload_data']['filename'];

---

需要哪个子数组，这个问题还不清楚。

$aray['upload_data']['orig_name']

需要哪个子数组，这个问题还不清楚。

$aray['upload_data']['orig_name']