PHP 根文件夹
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PHP root folder
提问by James
rename('/images/old_name.jpg', '/images/new_name.jpg');
This code gives file not found.
这段代码给出了file not found。
Script, where files are called is placed inside /source/folder.
调用文件的脚本放置在/source/文件夹中。
Files can be opened from http://site.com/images/old_name.jpg
文件可以从 http://site.com/images/old_name.jpg
How to get these files from root?
如何从root获取这些文件？
回答by Gumbo
renameis a filesystem function and requires filesystem paths. But it seems that you're using URI paths.
rename是一个文件系统函数，需要文件系统路径。但似乎您正在使用 URI 路径。
You can use $_SERVER['DOCUMENT_ROOT']to prepend the path to the document root:
您可以使用$_SERVER['DOCUMENT_ROOT']预先添加到文档根目录的路径：
rename($_SERVER['DOCUMENT_ROOT'].'/images/old_name.jpg', $_SERVER['DOCUMENT_ROOT'].'/images/new_name.jpg');
Or for more flexibility, use dirnameon the path to the current file __FILE__:
或者为了更灵活，dirname在当前文件的路径上使用__FILE__：
rename(dirname(__FILE__).'/images/old_name.jpg', dirname(__FILE__).'/images/new_name.jpg');
Or use relative paths. As you're in the /scriptfolder, ..walks one directory level up:
或者使用相对路径。当您在/script文件夹中时，..向上走一级目录：
rename('../images/old_name.jpg', '../images/new_name.jpg');
回答by adamse
In PHP the root (/) is the root of the filesystem not the "webroot". If the php-file is in the /source/directory and images are in /source/images/then this will work:
在 PHP 中，根 ( /) 是文件系统的根，而不是“webroot”。如果 php 文件在/source/目录中并且图像在其中，/source/images/那么这将起作用：
rename('images/old_name.jpg', 'images/new_name.jpg');
