(PHP 5)
scandir — List files and directories inside the specified path
$directory
[, int $sorting_order = SCANDIR_SORT_ASCENDING
[, resource $context
]] )
Returns an array of files and directories from the
directory.
directoryThe directory that will be scanned.
sorting_order
By default, the sorted order is alphabetical in ascending order. If
the optional sorting_order is set to
SCANDIR_SORT_DESCENDING, then the sort order is
alphabetical in descending order. If it is set to
SCANDIR_SORT_NONE then the result is unsorted.
context
For a description of the context parameter,
refer to the streams section of
the manual.
Returns an array of filenames on success, or FALSE on
failure. If directory is not a directory, then
boolean FALSE is returned, and an error of level
E_WARNING is generated.
| Versione | Descrizione |
|---|---|
| 5.4.0 |
sorting_order constants
were added. Any nonzero value caused descending order in previous versions. So
for all PHP versions, use 0 for ascending order, and 1
for descending order. An option for SCANDIR_SORT_NONE behavior did not
exist prior to PHP 5.4.0.
|
Example #1 A simple scandir() example
<?php
$dir = '/tmp';
$files1 = scandir($dir);
$files2 = scandir($dir, 1);
print_r($files1);
print_r($files2);
?>
Il precedente esempio visualizzerà qualcosa simile a:
Array
(
[0] => .
[1] => ..
[2] => bar.php
[3] => foo.txt
[4] => somedir
)
Array
(
[0] => somedir
[1] => foo.txt
[2] => bar.php
[3] => ..
[4] => .
)
Example #2 PHP 4 alternatives to scandir()
<?php
$dir = "/tmp";
$dh = opendir($dir);
while (false !== ($filename = readdir($dh))) {
$files[] = $filename;
}
sort($files);
print_r($files);
rsort($files);
print_r($files);
?>
Il precedente esempio visualizzerà qualcosa simile a:
Array
(
[0] => .
[1] => ..
[2] => bar.php
[3] => foo.txt
[4] => somedir
)
Array
(
[0] => somedir
[1] => foo.txt
[2] => bar.php
[3] => ..
[4] => .
)
È possibile utilizzare una URL come un nome di file con questa funzione se fopen wrappers è stata abilitata. Vedere fopen() per maggiori informazioni su come specificare i nomi di file. Vedere Supported Protocols and Wrappers per i link verso le informazioni sulle capacità dei vari wrapper, note sul loro uso, informazioni sulle variabili predefinite che forniscono.