public function FileSystem::move in Drupal 9

Same name and namespace in other branches

8 core/lib/Drupal/Core/File/FileSystem.php \Drupal\Core\File\FileSystem::move()

Moves a file to a new location without database changes or hook invocation.

This is a powerful function that in many ways performs like an advanced version of rename().

Checks if $source and $destination are valid and readable/writable.
Checks that $source is not equal to $destination; if they are an error is reported.
If file already exists in $destination either the call will error out, replace the file or rename the file based on the $replace parameter.
Works around a PHP bug where rename() does not properly support streams if safe_mode or open_basedir are enabled.

Parameters

string $source: A string specifying the filepath or URI of the source file.

string $destination: A URI containing the destination that $source should be moved to. The URI may be a bare filepath (without a scheme) and in that case the default scheme (public://) will be used.

int $replace: Replace behavior when the destination file already exists:

FileSystemInterface::EXISTS_REPLACE - Replace the existing file.
FileSystemInterface::EXISTS_RENAME - Append _{incrementing number} until the filename is unique.
FileSystemInterface::EXISTS_ERROR - Do nothing and return FALSE.

Return value

string The path to the new file.

Throws

\Drupal\Core\File\Exception\FileException Implementation may throw FileException or its subtype on failure.

Overrides FileSystemInterface::move

File

core/lib/Drupal/Core/File/FileSystem.php, line 378

Class

FileSystem: Provides helpers to operate on files and stream wrappers.

Namespace

Drupal\Core\File

Code

public function move($source, $destination, $replace = self::EXISTS_RENAME) {
  $this
    ->prepareDestination($source, $destination, $replace);

  // Ensure compatibility with Windows.
  // @see \Drupal\Core\File\FileSystemInterface::unlink().
  if (!$this->streamWrapperManager
    ->isValidUri($source) && substr(PHP_OS, 0, 3) == 'WIN') {
    chmod($source, 0600);
  }

  // Attempt to resolve the URIs. This is necessary in certain
  // configurations (see above) and can also permit fast moves across local
  // schemes.
  $real_source = $this
    ->realpath($source) ?: $source;
  $real_destination = $this
    ->realpath($destination) ?: $destination;

  // Perform the move operation.
  if (!@rename($real_source, $real_destination)) {

    // Fall back to slow copy and unlink procedure. This is necessary for
    // renames across schemes that are not local, or where rename() has not
    // been implemented. It's not necessary to use FileSystem::unlink() as the
    // Windows issue has already been resolved above.
    if (!@copy($real_source, $real_destination)) {
      $this->logger
        ->error("The specified file '%source' could not be moved to '%destination'.", [
        '%source' => $source,
        '%destination' => $destination,
      ]);
      throw new FileWriteException("The specified file '{$source}' could not be moved to '{$destination}'.");
    }
    if (!@unlink($real_source)) {
      $this->logger
        ->error("The source file '%source' could not be unlinked after copying to '%destination'.", [
        '%source' => $source,
        '%destination' => $destination,
      ]);
      throw new FileException("The source file '{$source}' could not be unlinked after copying to '{$destination}'.");
    }
  }

  // Set the permissions on the new file.
  $this
    ->chmod($destination);
  return $destination;
}

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