缩短长号到KMB吗？

用途

number_format()

if ($n < 1000000) {    // Anything less than a million    $n_format = number_format($n);} else if ($n < 1000000000) {    // Anything less than a billion    $n_format = number_format($n / 1000000, 3) . 'M';} else {    // At least a billion    $n_format = number_format($n / 1000000000, 3) . 'B';}

如果可以的话，我非常感谢任何自定义函数可以动态选择限制。

如果“限制”是指小数位数（精度），则很简单：

function custom_number_format($n, $precision = 3) {    if ($n < 1000000) {        // Anything less than a million        $n_format = number_format($n);    } else if ($n < 1000000000) {        // Anything less than a billion        $n_format = number_format($n / 1000000, $precision) . 'M';    } else {        // At least a billion        $n_format = number_format($n / 1000000000, $precision) . 'B';    }    return $n_format;}