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View File Name : FileNameMaker.php

<?php

/**
 * Swift Mailer File name making component (to avoid clashes)
 * Please read the LICENSE file
 * @copyright Chris Corbyn <chris@w3style.co.uk>
 * @author Chris Corbyn <chris@w3style.co.uk>
 * @package Swift_Message
 * @license GNU Lesser General Public License
 */

/**
 * File name maker (makes filenames in sequence)
 * @package Swift_Message
 * @author Chris Corbyn <chris@w3style.co.uk>
 */
class Swift_FileNameMaker
{
  /**
   * A singleton instance
   * @var swift_FileNameMaker
   */
  protected static $instance = null;
  /**
   * Just a number to increment
   * @var int
   */
  protected $id = 1;
  
  /**
   * Singleton Factory
   * @return Swift_FileNameMaker
   */
  public static function instance()
  {
    if (self::$instance === null) self::$instance = new Swift_FileNameMaker();
    
    return self::$instance;
  }
  /**
   * Get a unique filename (just a sequence)
   * @param string the prefix for the filename
   * @return string
   */
  public function Generate($prefix="file")
  {
    return $prefix . ($this->id++);
  }
}