PHP | FilesystemIterator rewind() Function
The FilesystemIterator::rewind() function is an inbuilt function in PHP which is used to rewinds back to the beginning of the file.
Syntax:
void FilesystemIterator::rewind( void )
Parameters: This function does not accept any parameters.
Return Value: This function does not return any value.
Below programs illustrate the FilesystemIterator::rewind() function in PHP:
Program 1:
<?php // Create new file system iterator $fileItr = new FilesystemIterator(dirname(__FILE__), FilesystemIterator::KEY_AS_FILENAME); // Loop runs while file iterator is valid while ($fileItr->valid()) { // Check for non-directory element if (!$fileItr->isDir()) { // Display the key echo $fileItr->key() . "<br>"; } // Move to the next element $fileItr->next(); } // Rewind back to start position $fileItr->rewind(); // Display the key echo "<br>After using rewind() function <br>"; echo $fileItr->key(); ?> |
Output:
applications.html bitnami.css favicon.ico zambiatek.html gfg.php index.php After using rewind() function applications.html
Program 2:
<?php // Create new file system iterator $fileItr = new FilesystemIterator(__DIR__, FilesystemIterator::CURRENT_AS_PATHNAME); // Loop runs for each element foreach($fileItr as $it) { // Display the current element echo $fileItr->current() . "<br>"; } // Rewind back to start position $fileItr->rewind(); // Display the key echo "<br>After using rewind() function <br>"; echo $fileItr->key(); ?> |
Output:
C:\xampp\htdocs\applications.html C:\xampp\htdocs\bitnami.css C:\xampp\htdocs\dashboard C:\xampp\htdocs\favicon.ico C:\xampp\htdocs\zambiatek.html C:\xampp\htdocs\gfg.php C:\xampp\htdocs\img C:\xampp\htdocs\index.php C:\xampp\htdocs\webalizer C:\xampp\htdocs\xampp After using rewind() function C:\xampp\htdocs\applications.html
Note: The output of this function depends on the content of server folder.
Reference: https://www.php.net/manual/en/filesystemiterator.rewind.php
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