Directory traversal function _php

The directory traversal function in PHP is inherently common, but it has an "object-oriented" form, so 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 return object has handle and path two properties, the first is equivalent to the handle returned by Opendir, the second is the directory name itself. Accessed with $d->handle and $d->path.

　

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

The first of each group in the three groups is the method of the directory object, called by the object---method (), and the next is the function, called by the function name (directory handle). Read is the next file name in the returned directory. Rewind is the first file name to go back to the directory. Close is to close the directory and no longer traverse.

　

(3) ChDir

Convert PHP's working directory.

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