dir

(PHP 4, PHP 5, PHP 7, PHP 8)

dirReturn an instance of the Directory class

Descrizione

dir(string $directory, ?resource $context = null): Directory|false

A pseudo-object-oriented mechanism for reading a directory. The given directory is opened.

Elenco dei parametri

directory

Directory to open

context

Nota: Il supporto per il contesto è stato aggiunto in PHP 5.0.0. Per la descrizione del contesto, fare riferimento a Stream Funzioni.

Valori restituiti

Returns an instance of Directory, or false in case of error.

Log delle modifiche

Versione Descrizione
8.0.0 context is now nullable.

Esempi

Example #1 dir() example

Please note the fashion in which Directory::read()'s return value is checked in the example below. We are explicitly testing whether the return value is identical to (equal to and of the same type as - see Comparison Operators for more information) false since otherwise, any directory entry whose name evaluates to false will stop the loop.

<?php
$d
= dir("/etc/php5");
echo
"Handle: " . $d->handle . "\n";
echo
"Path: " . $d->path . "\n";
while (
false !== ($entry = $d->read())) {
echo
$entry."\n";
}
$d->close();
?>

Il precedente esempio visualizzerà qualcosa simile a:

Handle: Resource id #2
Path: /etc/php5
.
..
apache
cgi
cli

Note

Nota:

The order in which directory entries are returned by the read method is system-dependent.