dirname
(PHP 3, PHP 4 )
dirname -- Returns directory name component of path
Description
string dirname ( string path)
Given a string containing a path to a file, this function
will return the name of the directory.
On Windows, both slash (/) and backslash (\) are used as
path separator character. In other environments, it is the
forward slash (/).
Example 1. dirname() example
<?php
$path = "/etc/passwd";
$file = dirname($path); // $file is set to "/etc"
?>
Note: In PHP 4.0.3, dirname() was fixed to be POSIX-compliant.
Essentially, this means that 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. Note that this means that you will often
get a slash or a dot back from dirname() in situations where
the older functionality would have given you the empty string.
dirname() has changed its behaviour in PHP 4.3.0. Check
the following examples:
<?php
//before PHP 4.3.0
dirname('c:/'); // returned '.'
//after PHP 4.3.0
dirname('c:/'); // returns 'c:'
?>
See also basename(), pathinfo(), and realpath().
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