How to use php rewinddir function

The rewinddir function is a built-in function in PHP, used to roll back a directory handle. Its syntax is "rewinddir(dir_handle)", and the parameter "dir_handle" represents the directory handle resource previously opened by opendir.

The rewinddir() function is a built-in function in PHP that is used to roll back directory handles. This function opens a directory and lists its files, resets the directory handle, lists its files again, and finally closes the directory handle. Send the directory handle as a parameter to the rewinddir function, returning Null on success and False on failure.

php How to use the rewinddir() function?

Function: Reset the directory handle created by opendir().

Syntax:

rewinddir(dir_handle)

Parameters:

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

Return value: Null is returned on success and False on failure.

php rewinddir() function example

<?php
$dir = "/phpstudy/WWW/20180414/";
// 打开目录，然后读取其内容
if ($dh = opendir($dir)){
        while (($file = readdir($dh)) !== false)
        {
            echo "filename:" . $file . "<br>";
        }
        //重置目录句柄
        rewinddir();
        while (($file = readdir($dh)) !== false)
        {
            echo "filename:" . $file . "<br>";
        }
}
?>

This article is an introduction to the PHP rewinddir function. I hope it will be helpful to friends in need!

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