Do not say his concept, if you want to build a computer classroom, first to have a room, the room to have n computers, there are n tables, n chairs, white boards, projectors and so on, these are what, just now we said, this is the object, can see the entity, Can say this computer classroom unit is this one entity object, they together compose this computer classroom, then we are the procedure, this and object-oriented have what relation? Develop a system program and build a computer classroom. Similarly, you abstract each individual function module into a class to form an object, consisting of multiple objects that are capable of receiving information, processing data, and sending information to other objects, among other interactions. constitutes an object-oriented program.
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"Getting Started with PHP object-oriented (OOP) programming" 3. What is object-oriented programming?