前导零正在改变php中的结果[重复]
问题描述：
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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此问题已经存在 这里有一个答案： p>
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一个前导零为php int做什么？
4个答案
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让我们假设在PHP中 p>
$ i = 016; echo $ i / 2; code> pre>输出返回
7 code >！ 为什么......？ p> div>
答
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.
答
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