PHP to rename a file

<?php
// Get the original file name
$original_file_name = 'old_file_name.txt';

// Get the new file name
$new_file_name = 'new_file_name.txt';

// Rename the file
if (rename($original_file_name, $new_file_name)) {
  echo 'File renamed successfully.';
} else {
  echo 'File renaming failed.';
}
?>

How it works:

The rename() function in PHP is used to rename a file or directory. It takes two parameters: the original file or directory name, and the new file or directory name. If the file or directory is successfully renamed, the function will return true, otherwise it will return false.

How to implement it effectively:

• Before renaming a file, it is important to check if the file exists. This can be done using the file_exists() function.
• If the file does not exist, the rename() function will fail and return false.
• It is also important to check if the new file name is valid. This can be done using the is_file() function.
• If the new file name is not valid, the rename() function will fail and return false.
• Finally, it is important to check if the user has the necessary permissions to rename the file. This can be done using the is_writable() function.
• If the user does not have the necessary permissions, the rename() function will fail and return false.