dir

Definition and usage

dir() function returns an instance of the Directory class. This function is used to read a directory, including the following:

• The given directory to open
• The handle and path properties of dir() are available
• There are three methods for the handle and path attributes: read(), rewind() and close()

实例

使用 dir() 函数：

<?php
$d = dir(getcwd());

echo "Handle: " . $d->handle . "<br>";
echo "Path: " . $d->path . "<br>";

while (($file = $d->read()) !== false){
  echo "filename: " . $file . "<br>";
}
$d->close();
?>

结果：

Handle: Resource id #2
Path: /etc/php
filename: .
filename: ..
filename: ajax.gif
filename: books.xml
filename: cdcatalog.xml
filename: cd_catalog.xml
filename: index.asp
filename: demo_array.asp
filename: demo_array.htm
...
...
...

grammar

 dir ( directory , context ) ;