... 112 procedural approach, 113–114 processForm( ) method, 176, 1 79, 287, 334 process.inc .php file, 1 79, 213, 221, 248, 250 processLogout( ) method, 220 progressive enhancements, with jQuery, ... action, 240–241 retrieve and display with AJAX, 247–252 modal-overlay class, 257 MyClass class, 89, 91 , 93 94 , 96 , 99 , 104, 107–108 MyClass instance, 91 MyClass object, 95 MyOtherClass class, ... object-oriented programming (OOP) classes creating, 88– 89 defining methods, 90 98 defining properties, 89 90 differences from objects, 88 and objects, 87–112 using inheritance, 99 –103 DocBlocks,...