This question already has an answer here:
Let us assume In PHP
$i = 016;
echo $i / 2;
The output is returning 7.! why..?
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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