php folder location

what is the difference between **./**folder-name/file.php and **../**folder-name/file.p开发者_StackOverflow中文版hp in php script?

Path is interpreted by operation system you're using:

• ./ - usually means current folder
• ../ - usually means parent folder

If you're in folder /home/user, then

• ./folder-name/file.php will point to /home/user/folder-name/file.php
• but ../folder-name/file.php will point to /home/folder-name/file.php, which is 1 level up

The first case, ./folder-name/file.php will start in your current directory.

The second case, ../folder-name/file.php will start from the parent directory.

../ is the directory below the directory you're currently in. ./ is the directory you're currently in. For example. If you are currently in /foo/bar. ../test.php is equivalent to /foo/test.php and ./test.php is equivalent to /foo/bar/test.php.