1  
 2  ========================
 3  Expression: 1
 4  Object is a number : 1
 5  
 6  ========================
 7  Expression: 1+2
 8  Object is a number : 3
 9  
10  ========================
11  Expression: 2*3
12  Object is a number : 6
13  
14  ========================
15  Expression: 1+2*3+4
16  Object is a number : 11
17  
18  ========================
19  Expression: (1+2)*(3+4)
20  Object is a number : 21
21  
22  ========================
23  Expression: 1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1+1*1
24  Object is a number : 21
25  
26  ========================
27  Expression: 1e2147483648
28  Object is a number : Infinity
29  
30  ========================
31  Expression: 1e4294967296
32  Object is a number : Infinity
33  
34  ========================
35  Expression: 1e9223372036854775808
36  Object is a number : Infinity
37  
38  ========================
39  Expression: 1e18446744073709551616
40  Object is a number : Infinity
41  
42  ========================
43  Expression: 1e-2147483649
44  Object is a number : 0
45  
46  ========================
47  Expression: 1e-4294967296
48  Object is a number : 0
49  
50  ========================
51  Expression: 1e-9223372036854775809
52  Object is a number : 0
53  
54  ========================
55  Expression: 1e-18446744073709551616
56  Object is a number : 0
57  
58  ========================
59  Expression: self::-name
60  Object is empty (NULL)