chmod文件夹，使其可在php中写入服务器

Question

i am trying to upload a file on server via PHP form. Data is all working find ad getting image name in DB perfectly but issue is that i am not getting image on server.

I googled and found that DIR is not writable. I checked with below code:

$image_folder   = $destination_folder . $new_file_name;
if ( ! is_writable(dirname($image_folder))) {
      echo dirname($newFileName) . ' must writable!!!';
} 

and then to change the permission, i tried using chmod('$destination_folder',0777) but all of a sudden a thought striked to mind that should i give write permissions to all on server.

Ideally answer is no but then how can i handle it..??

Answer 1

you can give permissions 755,

7       5     5
user   group  world
r+w+x  r+x    r+x
4+2+1  4+0+1  4+0+1  = 755

Answer 2

You have to know who is the owner. Default makes it sense who creates the folder.

• You can use 755 if php creates the folder (php user is owner: the first 7 = full rights for owner) (recommend)

• If eg ftp user is owner, upload via php user with 755 permissions for dir is not enough: php user has no write permissions .

Answer 3

可能不是您要寻找的答案，但是如果您发现PHP无法将文件写入文件系统上的任何位置，并且无法为上载设置chmod目录，则始终可以将图像存储在数据库中