php浮點數比較不相等的問題

首先問題是這樣的 $x = 8 - 6.4; // which is equal to 1.6 $y = 1.6; var_dump($x === $y); // is not true echo "<br>"; var_dump(floatval($x) == floatval($y)); echo "<br>"; echo floatval($x) . "<br>"; echo floatv

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