2Jason E. Sweat. PHP Architect's Guide to PHP Design Pat- terns [ M] . Canada: Marco Tabini & Associates, Inc, 2005 : 261-281.
3Patterns of persistence [EB/OL] . [2008-02-20] http://www. ibm.com/developerworks/java/library/j -pop 1/.
4Separate form and function in PHP applications with Smarty [ EB/OL] . [ 2007 -01 -17] http://www.ibm.com/developer- works/opensource/library/os-php-smarty/.