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 geeks.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\geeks.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