PHP: Insert a gap every N symbol but from the end

[courtlanda]

How to insert a gap on the RR every N symbol, but starting from the start of the line to the end. Like, 1234567 - Yes. 1 234 567 (if every three symbols). chunk_split and wordwrap only with more than 0 values

In principle, this is how:

$reverse = strrev("1234567");
$withSpaces = chunk_split($reverse, 3, ' ');
echo strrev($withSpaces);

But maybe something's easier.

[irl]

http://php.net/manual/ru/function.number-format.php

If briefly:

1. Introduction
2. How many symbols after the tip.
3. Glass sectioner.
4. Dividing thousands (every third end)

Example:

echo number_format(1000000, 0, '.', ' '); // 1 000 000
echo number_format(1000000, 2, '.', ','); // 1,000,000.00