same data type and same value but first function declare as a argument type declaration and return int(7)
and second fucntion declare as a return type declaration but return int(8).
function argument_type_declaration(int $a, int $b){
return $a+$b;
}
var_dump(argument_type_declaration(3.5,4.7));
//output:int(7)
function return_type_declaration($a,$b) :int{
return $a+$b;
}
var_dump(return_type_declaration(3.5,4.7));
//output:int(8)