PHP字符串四舍五入到小数点后两位的正确方法是什么?
$number = "520"; // It's a string from a database
$formatted_number = round_to_2dp($number);
echo $formatted_number;
输出应该是520.00;
round_to_2dp()函数应该如何定义?
PHP字符串四舍五入到小数点后两位的正确方法是什么?
$number = "520"; // It's a string from a database
$formatted_number = round_to_2dp($number);
echo $formatted_number;
输出应该是520.00;
round_to_2dp()函数应该如何定义?
当前回答
无整数
$double = '21.188624';
echo intval($double) . '.' . substr(end(explode('.', $double)), 0, 2);
其他回答
下面是strtok和str_pad的另一个解决方案:
$num = 520.00
strtok(round($num, 2), '.') . '.' . str_pad(strtok('.'), 2, '0')
Try:
$number = 1234545454;
echo $english_format_number = number_format($number, 2);
输出将是:
1,234,545,454.00
我自己做。
$decimals = 2;
$number = 221.12345;
$number = $number * pow(10, $decimals);
$number = intval($number);
$number = $number / pow(10, $decimals);
$retailPrice = 5.989;
echo number_format(floor($retailPrice*100)/100,2, '.', '');
它将返回5.98而不是四舍五入的数字。
使用PHP number_format()函数。
例如,
$num = 7234545423;
echo number_format($num, 2);
输出将是:
7,234,545,423.00