Code examples of non-forwarded calls and forwarded calls in PHP

This article brings you code examples about non-forwarding calls and forwarding calls in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Static access to members of a class:

1. Non-forwarded call

1) Clear class name (A::funcA())

2. Forward call

1)self:: 2)parent:: 3)static:: 4)forward_static_call() 5)get_called_class()

Note:
"Late binding" means that static:: is no longer parsed into the class in which the current method is defined, but is actually run calculated at time. It can also be called "static binding" because it can be used for (but is not limited to) calls to static methods.

A C C

The inherited property belongs to you

The inheritance chain gives priority to accessing the current class, accessing according to the reserved word characteristics, and then accessing according to the inheritance chain.

$this Access member (calling context)

self:: Access member (parsing context)

value; } } class B extends A{ protected $value = "B value"; } $app = new B(); $app->printValue();

运行结果：B value

printValue();

运行结果：A static value

printValue();

运行结果：A static value

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