前导零正在改变php中的结果[重复]

Question

This question already has an answer here:

• What does a leading zero do for a php int? 4 answers

Let us assume In PHP

$i = 016;
echo $i / 2;

The output is returning 7.! why..?

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Answer 1

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.