<?php

namespace wh88;

?function sum($a,$b){

?return "{$a} + {$b} =".($a+$b);

?}

?echo sum(2,3);

?echo '<br>';

?//echo call_user_func(要執行的函數，參數1，參數2.。)

?echo call_user_func(__NAMESPACE__.'\sum',3,10);

?echo '<hr>';

?echo call_user_func_array(__NAMESPACE__.'\sum',[30,40]);

?class test

{

public function sum($a,$b){

?return "{$a} + {$b} =".($a+$b);

?}

?}

?$obj=new test();

?echo '<hr>';

echo call_user_func_array([$obj,'sum'],[22,40]);//當使用靜態方法時（static）,echo call_user_func_array([test::class,'sum'],[22,40]);

//方法重載

class test1

{

public function __call($whl,$qq){

return '跑偏了';

}

}

echo '<hr>';

$obj=new test1();

echo $obj->www(10,100,30);