New to PHP V5.3 is the ability to have the name of the class when specified be a variable when making a staticcall.
PHP V5.3的一个新特性就是在进行静态调用时,能够使指定的类名成为一个变量。
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With the allowed parameters defined in an array, the call from the application program to the argument processing code can be kept as simple as a single call to a static method.