The PHP magic method __autoload function is called whenever a class is referenced that has not yet been included in the source file.

每当引用源代码文件中还不包含的类时，调用 __autoload函数。

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Calling the object reference shown in Listing 9 as a variable automatically calls the __invoke magic method, making the class itself act as a closure.

将清单9中所示的对象引用调用为变量将自动调用__invoke魔术方法，使类本身用作闭包。

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Calling the object reference shown in Listing 9 as a variable automatically calls the __invoke magic method, making the class itself act as a closure.

将清单9中所示的对象引用调用为变量将自动调用__invoke魔术方法，使类本身用作闭包。

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