Directory traversal function

Traversal | function PHP Directory traversal function is also very common, but it has an "object-oriented" form, so also mention:

(1) dir, Opendir

Usage:

$d = Dir ("directory Name");

$handle = Opendir ("directory Name");

The former returns a directory object, which returns a directory handle. The former returns an object with handle and path two attributes, the first equivalent to the handle returned by Opendir, and the second is the directory name itself. Visit with $d->handle and $d->path.

　

(2) Read, Readdir, rewind, Rewinddir, close, Closedir

The first of each group in the three groups is a method of the directory object, called by the object-> method (), and the latter is a function, called by the function name (directory handle). Read is the next filename in the directory. Rewind is the first file name to return to the directory. Close is the directory that is closed and is no longer traversed.

　

(3) ChDir

Convert PHP's working directory.