Description:
------------
functions in php are not working as they should perform.
like i define a function 

function abc($param1,$param2){
   // some code here
   echo "abc Function Calling";
}

then i made a function call 
abc($temp_param1,$temp_param2,$temp_param3);

It is calling the above function but i think it should show some errors. 

Reproduce code:
---------------
function abc($param1,$param2){
// some code here
}

abc($temp_param1,$temp_param2,$temp_param3);

Expected result:
----------------
It should show some errors.

Actual result:
--------------
it is showing

abc Function Calling