Clear Magento cache

magento_clear_cache.php

<?php
  /******************************************************************************************************************
   * Source: http://www.emvee-solutions.com/blog/magento-clear-cache-programatically/
   * 
   * Clearing the Magento cache programmatically
   ******************************************************************************************************************/

  //increase execution time 
  ini_set('max_execution_time', 900); //900 seconds = 15 minutes
  
  //require Magento
  require_once 'app/Mage.php';  
  $app = Mage::app('admin');  
  umask(0);  
  
  //enable Error Reporting
  error_reporting(E_ALL & ~E_NOTICE);
  Mage::setIsDeveloperMode(true);
  
  try {            
    //CLEAN OVERALL CACHE
    flush();
    Mage::app()->cleanCache();
    // CLEAN IMAGE CACHE     
    flush();
    Mage::getModel('catalog/product_image')->clearCache();
    //print
    print  'done';
  } 
  catch(Exception $e){
    //something went wrong...
    print($e->getMessage());
  }
?>