Simple method to use php closedir() function?

closedir() FunctionClose the directory handle.

Syntax

 closedir(dir_handle);

Parameters dir_handle Optional. Specifies the directory handle resource previously opened by opendir(). If this parameter is not specified, the last link opened by opendir() is used.

Usage example, PHP opendir() is used to open a directory or folder. The directory to be opened must exist physically, otherwise an error will be reported. opendir() is commonly used in conjunction with closedir(), readdir() and rewinddir(). PHP opendir() returns true if executed successfully, false if failed. The following is an example for reference:, the code is as follows:

<?php

$dir = "/upload/";//定义要打开的目录为“upload”

//打开目录并遍历所有文件

if (is_dir($dir)) {

 if ($dh = opendir($dir)) {

     while (($file = readdir($dh)) !== false) {

          echo "filename: $file : filetype: " . filetype($dir . $file) . "\n";

     }

      closedir($dh);

  }

}

?>

The above code will list all file names in the upload folder, if included Chinese file names may be garbled, so you need to output the header of the PHP web page: opendir()

header("content-type:text/html;charset=utf-8");

After adding this sentence, the Chinese file names will not be garbled. Remember, after using opendir() to open a directory, use closedir() to close it. This is the best habit in PHP programming.

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