dir函数_PHP dir（）函数与示例

一时失言乱红尘 2023-03-05 09:59 2阅读 0赞

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][PHP dir_ function]

参考： [PHP dir()函数][PHP dir_ function]

> 翻译自: [https://www.includehelp.com/php/dir-function-with-example.aspx][https_www.includehelp.com_php_dir-function-with-example.aspx]

dir函数

[PHP dir_ function]: https://www.w3schools.com/php/func_directory_dir.asp
[https_www.includehelp.com_php_dir-function-with-example.aspx]: https://www.includehelp.com/php/dir-function-with-example.aspx