The semantics of the development of programming languages and the scope of their applications quickly took the right positions. Of course, mathematical calculations of the trajectories of the planets and the movement of exchange rates in the markets still excite society, but even there strings of symbols occupy a worthy place.
An essential point: from strict typing of variables to their absolutely free use and automatic type conversion, the path was much longer as needed.
Everything in the world has lines
One can argue with this, but there is no special meaning, and even more so in programming. The semantics of explode PHP greatly simplified the work of the programmer: she transferred the use of several functions and constructs into one whole.
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Using explode, you can automate the process of creating instances of an object, and having an abstract object, you can control its type by transmitting various character strings for initialization. This approach reduces the number of different objects and simplifies their manipulation.