exceptions handled by PHP int, how to interpret

The following code

$qty = 50.852;echo (int) ($qty * 10000);// 期望结果:508520// 实际结果:508519

How to explain the above questions? And how do you get the desired results?

Reply content:

The following code

$qty = 50.852;echo (int) ($qty * 10000);// 期望结果:508520// 实际结果:508519

How to explain the above questions? And how do you get the desired results?

The original answer is not correct, delete, supplementary topics related content as follows:

$qty = 50.852;echo $qty * 10000; //508520echo (int) ($qty * 10000); //508519echo round($qty * 10000); //508520echo (int)($qty * 100000); //5085200echo (int)($qty * 1000); //50852echo (int)(508520); //508520echo (int)50.852; //50

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You can look at Brother Bird's explanation of floating-point numbers.

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