The parameters of methods in the PHP interface can be inconsistent with those in the implementation class method.

{Code ...} the above programs can run normally. It is understood that such usage in JAVA is not acceptable, and this usage seems unreasonable. why can it be used in PHP?

Interface Dispatch2 {public function getController ();} class QueryString implements Dispatch2 {public function getController ($ url = '', $ url2 ='') {echo '000000 ';}} $ B = new QueryString (); echo $ B-> getController ();

The above programs can run normally. It is understood that such usage in JAVA is not acceptable, and this usage seems unreasonable. why can it be used in PHP?

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Interface Dispatch2 {public function getController ();} class QueryString implements Dispatch2 {public function getController ($ url = '', $ url2 ='') {echo '000000 ';}} $ B = new QueryString (); echo $ B-> getController ();

The above programs can run normally. It is understood that such usage in JAVA is not acceptable, and this usage seems unreasonable. why can it be used in PHP?

In PHP, the function is called by looking up the table and finding the function corresponding to the function name.

PHP's function overload is different from other languages. different numbers of parameters it receives are actually passed to the function as an array.

Therefore, the list of function calls can be executed without parameters, because the parameter array is null, which is reasonable.

PHP function calls do not check the matching of the number of parameters.

Reference: here
And here