PHP 7.2.7 Released

rewinddir

(PHP 4, PHP 5, PHP 7)

rewinddirディレクトリハンドルを元に戻す

説明

void rewinddir ([ resource $dir_handle ] )

dir_handle で指定されたディレクトリの ストリームをディレクトリの先頭にリセットします。

パラメータ

dir_handle

opendir() が事前にオープンした ディレクトリハンドルリソース。 ディレクトリハンドルを指定しなかった場合は、 opendir() が最後にオープンしたものを使用します。

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User Contributed Notes 2 notes

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1
osamahussain897 at gmail dot com
4 months ago
/* Source Code */

<?php
$dir
= "/images/";

// Open a directory, and read its contents
if (is_dir($dir)){
  if (
$dh = opendir($dir)){
   
// List files in images directory
   
while (($file = readdir($dh)) !== false){
      echo
"filename:" . $file . "<br>";
    }
   
rewinddir();
   
// List once again files in images directory
   
while (($file = readdir($dh)) !== false){
      echo
"filename:" . $file . "<br>";
    }
   
closedir($dh);
  }
}
?>

/* Result */

filename: cat.gif
filename: dog.gif
filename: horse.gif
filename: cat.gif
filename: dog.gif
filename: horse.gif
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0
ASchmidt at Anamera dot net
10 days ago
It is crucial to note that rewinddir() does not simply start over at the beginning of the SAME directory list. Instead, this function first re-reads the directory - thus any file that were deleted (or inserted) since the original opendir() will be reflected after "rewinding".

In that respect, rewinddir() is equivalent to a closedir(), opendir() sequence, but without obtaining a new handle.
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