In my PHP application I am using file_put_contents() to create a file to display comprising of a blob retrieved from a table in my database. However, currently, in order to get the function to work on my Amazon EC2 Ubuntu instance, I had to give the folder it's writing to 777 permissions. However, I know this is extremely bad and I want to change this, but I don't know what to.
在我的PHP应用程序中，我使用file_put_contents（）来创建要显示的文件，其中包含从数据库中的表中检索的blob。但是，目前，为了让函数在我的Amazon EC2 Ubuntu实例上运行，我必须给它写入777权限的文件夹。但是，我知道这非常糟糕，我想改变这一点，但我不知道该怎么做。
I'm a novice at Linux and I'm currently navigating around my instance through the help of Google. This is part of a university assignment, so I can't just hire a Linux expert (just in case one of you says I shouldn't be using such an instance if I don't know Linux!)
我是Linux的新手，我目前正在Google的帮助下浏览我的实例。这是大学任务的一部分，所以我不能只聘请一位Linux专家（以防万一你说如果我不懂Linux就不应该使用这样的实例！）
1 个解决方案
#1
1
Assuming that you are using this from a browser with normal http requests, you need to find out what the user is that is running the web-server. Probably something like apache, www-user or something similar.
假设您在具有正常http请求的浏览器中使用此功能，则需要找出运行Web服务器的用户。可能像apache，www-user或类似的东西。
Then you can do 2 things:
然后你可以做两件事：
- Change the ownership of the directory where you want to save the file to the web-server user and then it can have permissions 755
- 将要保存文件的目录的所有权更改为Web服务器用户，然后它可以具有权限755
- Change the group of the directory to the group of the web-server and then the directory needs 775.
- 将目录组更改为Web服务器组，然后目录需要775。
#1
1
Assuming that you are using this from a browser with normal http requests, you need to find out what the user is that is running the web-server. Probably something like apache, www-user or something similar.
假设您在具有正常http请求的浏览器中使用此功能，则需要找出运行Web服务器的用户。可能像apache，www-user或类似的东西。
Then you can do 2 things:
然后你可以做两件事：
- Change the ownership of the directory where you want to save the file to the web-server user and then it can have permissions 755
- 将要保存文件的目录的所有权更改为Web服务器用户，然后它可以具有权限755
- Change the group of the directory to the group of the web-server and then the directory needs 775.
- 将目录组更改为Web服务器组，然后目录需要775。