PHP - Correct way to add space between numbers?

问题

Probably a simple problem if you know the answer.

What I have

Numbers with no spaces.

$str = 10000;
$str2 = 100000;

What I want

Convert above to below...

$str = '10 000';
$str2 = '100 000';

Own thoughts

I thought of some strpos, regexp, str_replace but is it really the way to solve this? I will accept the most correct, short code answer with no lack of speed.

回答1:

Use number_format function. With space for thoudsandsSparator as below.

number_format($number, 0, '.', ' ')

Codepad Demo.

回答2:

Look no further than number_format.

回答3:

use number_format:

$formatted = number_format(
    $number, $numberOfDecimals, $decimalSeperator, $thousandsSeperator);

来源：https://stackoverflow.com/questions/15677094/php-correct-way-to-add-space-between-numbers