Returns a parent directory's path
Syntax
dirname(string $path, int $levels = 1): string
Parameters
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.
Return
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.
Examples
1 · path
<?
echo dirname("/etc/passwd?a=1") . PHP_EOL;
echo dirname("/etc/passwd") . PHP_EOL;
echo dirname("/etc/?a=1") . PHP_EOL;
echo dirname("/etc/") . PHP_EOL;
echo dirname(".") . PHP_EOL;
echo dirname("C:\\");
?>/etc /etc /etc / . .
2 · levels
<?
echo dirname("/usr/local/lib", 1) . PHP_EOL;
echo dirname("/usr/local/lib", 2);
?>/usr/local /usr
