在PHP中百分号是什么意思? [英] What does the percent sign mean in PHP?

问题描述

这到底是什么意思?

$number = ( 3 - 2 + 7 ) % 7;

推荐答案

它是

It's the modulus operator, as mentioned, which returns the remainder of a division operation.

示例:3%5返回3，因为3除以5为0，其余为3.

Examples: 3%5 returns 3, as 3 divided by 5 is 0 with a remainder of 3.

5 % 10返回5，出于相同的原因，10进入5次零次，余数为5.

5 % 10 returns 5, for the same reason, 10 goes into 5 zero times with a remainder of 5.

10 % 5返回0，因为10除以5恰好进行2次，没有余数.

10 % 5 returns 0, as 10 divided by 5 goes exactly 2 times with no remainder.

在您发布的示例中，(3 - 2 + 7)计算为8，得到8 % 7，因此$number将为1，这是8/7的余数.

In the example you posted, (3 - 2 + 7) works out to 8, giving you 8 % 7, so $number will be 1, which is the remainder of 8/7.

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