PHP转换为整数返回错误的值 [英] PHP cast to integer returns wrong value

问题描述

看看这个朋友，告诉我我不疯了...

Have a look at this my friend and tell me I'm not crazy...

echo (int) (9.45 * 100); // gives 944
echo (int) 945; // gives 945

我不明白为什么第一条指令会返回944！这是一个已知的php问题？

I don't understand why the first instruction would return 944!???? Is this a known php issue? help is appreciated as always!

推荐答案

根据PHP文档（ http://php.net/manual/en/language.types.integer.php ）

When converting from float to integer, the number will be rounded towards zero. 

这就是为什么你会得到944。

That's why you are getting 944.

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