Question: Let us assume In PHP

```
$i = 016;
echo $i / 2;

```

The output is returning `7`.! why..?

Answer: 
Appending 0 to the front of a number in PHP is making it octal.

16 in octal is equivalent to 14 in decimal.

So , 14/2 = 7 is the answer.
The leading `0` will cause `016` to be interpreted as written in base `8`, thus in base `10` it will actually be `14`.
So `14/2 = 7`