本文介绍了PHP - 强制整数转换为带有三位小数的浮点数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试将大量数字转换为特定格式，即 +/-NNN.NNN.所以，如果我有这些数字:
I am trying to convert a big array of numbers to a specific format which is +/-NNN.NNN. So, if I have these numbers:
$numbers1 = array(-1.23, 0.3222, 10, 5.54);
我希望他们的最终格式是
I want their final format to be
$numbers2 = array(-001.023, +000.322, +010.000, +005.054);
我正在尝试这样做:
foreach ($numbers1 as $n) {
$fnum = abs(number_format((float)$n, 3, '.', ''));
if ($fnum>0 && $fnum<10) {
$fnum = '00'.$fnum;
} else if ($fnum >= 10 && $fnum<100) {
$fnum = '0'.$fnum;
}
if ($n>0) $fnum = '+'.$fnum;
if ($n<0) $fnum = '-'.$fnum;
if ($n == 0) $fnum = '+000.000';
$numbers2[] = $fnum;
}
这是错误的，我只是不知道要使用什么来实现它.
This is wrong and I just don't know what to use in order to achieve it.
推荐答案
尝试使用 sprintf()
$numbers2[] = sprintf("%+07.3f", $fnum);
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