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神奇的PHP 让小弟我找不着北 floatval转 intval 变小

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2016-06-13 11:55:221020browse

神奇的PHP 让我找不着北 floatval转 intval 变小

//无解了 想不通，求解<br /><br />$c=2700*0.7;<br />$m=1890;<br />var_dump($c<$m); // 两个者的值都是1890 但它却返回 true<br />echo intval($c);// c应该是1890的 但经过intval 它变成了 1889<br />

------解决方案--------------------
$c = 2700*0.7;<br />printf('%.14f', $c); //1889.99999999999977<br />

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