/**
* Try to Upload the given file returning the filename on success
*
* @param array $file $_FILES array element
* @param string $dir destination directory
* @param boolean $overwrite existing files of the same name?
* @param integer $size maximum size allowed (can also be set in php.ini or server config)
*/
public function file($file, $dir, $overwrite = FALSE, $size = FALSE)
{
// Invalid upload?
if (!isset($file['tmp_name'], $file['name'], $file['error'], $file['size']) or $file['error'] != UPLOAD_ERR_OK) {
return FALSE;
}
// File to large?
if ($size and $size > $file['size']) {
return FALSE;
}
// Create $basename, $filename, $dirname, & $extension variables
extract(pathinfo($file['name']) + array('extension' => ''));
// Make the name file system safe
$filename = sanitize_filename($filename);
// We must have a valid name and file type
if (empty($filename) or empty($extension)) {
return FALSE;
}
$extension = strtolower($extension);
// Don't allow just any file!
if (!$this->allowed_file($extension)) {
return FALSE;
}
// Make sure we can use the destination directory
Directory::usable($dir);
// Create a unique name if we don't want files overwritten
$name = $overwrite ? "{$filename}.{$ext}" : $this->unique_filename($dir, $filename, $extension);
// Move the file to the correct location
if (move_uploaded_file($file['tmp_name'], $dir . $name)) {
return $name;
}
}
