PHP中数字和字符串值的区别 [英] Difference between numeric and string value in PHP

问题描述

在比较 PHP 中的 0 和 '0' 两个字符串时，我发现了差异.我可以做些什么来使它们在 if 操作中被同等比较吗?

I am getting a difference when comparing two string which are 0 and '0' in PHP. Can I do anything to make them be compared equally in an if action?

谢谢！

推荐答案

如果比较使用:

if ('0' == 0) // if '0' is equal to 0

当将值与转换为数字的字符串进行比较时，它应该返回 true.如果你这样做:

it should return true as the values are compared with the string being converted to a number. If you do:

if ('0' === 0) // if '0' is identical to 0

它会返回 false，因为它们也必须是相同的类型.

it will return false as they have to be of the same type too.

注意三重="

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