Usage of php func_num_args() function

This article mainly introduces the usage of PHP function func_num_args, and analyzes in detail the related usage skills of func_num_args function returning function parameters in the form of examples, which has certain reference value. Friends who need it can refer to

The examples in this article describe the usage of the PHP function func_num_args. Share it with everyone for your reference, the details are as follows:

function foo()
{
   $numargs = func_num_args();//返回这个函数所含的参数
   echo "Num fo argumets : $numargs <br>\n";
   $arr=func_get_args();//返回一个数组给$arr
   print_r($arr);//输出这个数组所有的参数
   echo "<hr>";
   for($i=0;$i<=$numargs;$i++)
   {
       echo $arr[$i]."<br>";
   }
}
foo(1,2,3,45,6);

The running results are as follows:

Num fo argumets : 5 
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 45 [4] => 6 ) 
--------------------------------------------------------------------------------
1
2
3
45
6

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