dir函数

PHP dir()函数 (PHP dir() function)

dir() function is an instance of the directory class, it is used to read the directory, it includes handle and path properties – which can be used to get the resource id and path to the directory. Both handle and path have read(), rewind(), and close() methods.

dir()函数是目录类的实例，用于读取目录，它包括句柄和路径属性–可用于获取资源ID和目录的路径。 句柄和路径都具有read() ， rewind()和close()方法。

Syntax:

句法：

    dir(directory,context);

Parameter(s):

参数：

• directory – It is used to specify the path to the directory to be opened.

  directory –用于指定要打开的目录的路径。

• context – It is an optional parameter; it defines the context (a set of options that can modify the behavior of the stream).

  上下文 –它是一个可选参数； 它定义了上下文(一组可以修改流行为的选项)。

Return value:

返回值：

On success – it returns an instance to the directory, on fail – it returns "FALSE".

成功–将实例返回目录；失败–将返回“ FALSE”。

Example: PHP code to demonstrate example of dir() function

示例：PHP代码演示dir()函数的示例

<?php 
//path to current working directory
$cwd = dir(getcwd());
echo "Directory handle: " . $cwd->handle . "<br>";
echo "Current path: " . $cwd->path . "<br>";
//reading & printing the filenames using dir()
while (($file = $cwd->read()) !== false){ 
echo "File: " . $file . "<br>"; 
} 
//closing the dir instance
$cwd->close(); 
?>

Output

输出量

Directory handle: Resource id #5
Current path: /home
File: .
File: ..
File: main.php

Reference: PHP dir() function

参考： PHP dir()函数

翻译自: https://www.includehelp.com/php/dir-function-with-example.aspx

dir函数