These are the four actions that make up the significant part of the actions of a PHP project. By the time developers get to the mid-level, they have actually created dozens of CRUD grids. In many cases, CRUD operations are an important part of CMS, inventory, and accounts management systems.

The idea behind the CRUD operations is to empower the users so that they could use the app to the maximum. All the information generated or modified through CRUD operations is stored in a database (generally MySQL).

Source: DZone