php require 中的文件路径
我继承了一些代码：
include('../cfg/db_setup.php');
require('./fpdf/fpdf.php');
我知道 ../cfg 意味着从当前目录开始，然后向上一层并向下进入 cfg 目录。 ./fpdf 是什么意思？我从未见过在文件路径中使用单点斜杠，并且似乎无法在我们服务器上的任何位置找到 fpdf 目录，但代码正在运行，所以显然它就在那里。
I've inherited some code:
include('../cfg/db_setup.php');
require('./fpdf/fpdf.php');
I know that ../cfg means start in the current directory, then go up one level and down into the cfg dir. What does the ./fpdf mean? I've never seen a single dot slash used in a file path, and can't seem to find the fpdf directory anywhere on our server, but the code is working so apparently it's there somewhere.
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只是一个注释。
相对路径不相对于当前的 include_path。
相对路径，例如 .或 ../ 相对于当前工作目录。如果您在 CGI 或命令行上运行脚本，或者某个脚本被另一个目录中的另一个脚本包含，则工作目录会有所不同。
因此，理论上不可能在不知道上下文的情况下确定这些路径指向哪里：P
可以肯定的是，如果 PHP < 5.3：
如果 PHP >= 5.3：
Just a note.
Relative paths don't are relative to the current include_path.
Relative paths, such as . or ../ are relative to the current working directory. The working directory is different if you run a script on CGI or command line or if a script is included by another script in another directory.
Therefore theoretically is not possible to be sure where these paths are pointing to without to know the context :P
To be sure, if PHP < 5.3:
If PHP >= 5.3:
.被定义为当前文件夹。因此，如果 PHP 脚本位于
/path/to/script/，那么第二条语句将查找/path/to/script/fpdf/fpdf.php.is defined as the current folder.So, if the PHP script is located at
/path/to/script/, then the second statement will look for/path/to/script/fpdf/fpdf.php./ 是当前目录。 ./fpdf/ 应该与包含文件位于同一路径上，或者位于 php include_path 之外的某个位置。
./ is the current directory. ./fpdf/ should be on the same path as the including file, or somewhere on the off the php include_path.
./- 这意味着在当前路径中./- this means in the current path