(PHP 4, PHP 5, PHP 7)
dirname — Returns a parent directory's path
dirname ( string $path [, int $levels = 1 ] ) : string
Given a string containing the path of a file or directory, this function will return the parent directory's path that is levels up from the current directory.
Note:
dirname() operates naively on the input string, and is not aware of the actual filesystem, or path components such as "
..".
dirname() is locale aware, so for it to see the correct directory name with multibyte character paths, the matching locale must be set using the setlocale() function.
path
A path.
On Windows, both slash (/) and backslash (\) are used as directory separator character. In other environments, it is the forward slash (/).
levels
The number of parent directories to go up.
This must be an integer greater than 0.
Returns the path of a parent directory. If there are no slashes in path, a dot ('.') is returned, indicating the current directory. Otherwise, the returned string is path with any trailing /component removed.
| Version | Description |
|---|---|
| 7.0.0 | Added the optional levels parameter. |
Example #1 dirname() example
<?php
echo dirname("/etc/passwd") . PHP_EOL;
echo dirname("/etc/") . PHP_EOL;
echo dirname(".") . PHP_EOL;
echo dirname("C:\\") . PHP_EOL;
echo dirname("/usr/local/lib", 2); The above example will output something similar to:
/etc / (or \ on Windows) . C:\ /usr
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https://www.php.net/manual/en/function.dirname.php