如何将number_format的输出转换回PHP中的数字? [英] How do I convert output of number_format back to numbers in PHP?

问题描述

PHP无法识别1,200.00(由number_format生成)，但只能识别1200.00，

PHP can't recognize 1,200.00(generated by number_format) but only 1200.00,

该问题的一般解决方案是什么?

What's the general solution for this problem?

推荐答案

您可以删除不是数字或小数点的任何字符，并使用 floatval :

You could remove any character that is not a digit or a decimal point and parse that with floatval:

$number = 1200.00;
$parsed = floatval(preg_replace('/[^\d.]/', '', number_format($number)));
var_dump($number === $parsed);  // bool(true)

如果数字不是.作为小数点:

And if the number has not . as decimal point:

function parse_number($number, $dec_point=null) {
    if (empty($dec_point)) {
        $locale = localeconv();
        $dec_point = $locale['decimal_point'];
    }
    return floatval(str_replace($dec_point, '.', preg_replace('/[^\d'.preg_quote($dec_point).']/', '', $number)));
}

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