opendir函数_PHP opendir（）函数与示例-蒲公英云

opendir函数_PHP opendir（）函数与示例

opendir函数

PHP opendir()函数 (PHP opendir() function)

The full form of opendir is “Open Directory”, the function opendir() is used to open a directory.

opendir的完整形式为“ Open Directory” ， 函数opendir()用于打开目录。

Syntax:

句法：

opendir(path,context);

Parameter(s):

参数：

path – It is the path (name) to the directory to be opened.

path –是要打开的目录的路径(名称)。
context – It is an optional parameter; it defines the context (a set of the options that can modify the behavior of the stream) of the directory handle.

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

Return value:

返回值：

If function execution is success – it returns the directory handle resource if function execution is failed – it returns the “FALSE”.

如果函数执行成功–如果函数执行失败，则返回目录句柄资源–返回“ FALSE”。

Example: PHP code to open a directory, read its files, and close it

示例：PHP代码打开目录，读取其文件，然后关闭它

<?php
$path = "/home";
//checking whether $path is a directory or not
//then, opening the directory and reading its files
if (is_dir($path)){
  if ($dh = opendir($path)){
    while (($file = readdir($dh)) !== false){
      echo "File:" . $file . "<br/>";
    }
    //closing the directory
    closedir($dh);
  }
}
?>