[RESOLVED] How to use preg_replace for adding commas to numbers in strings?

[jsnyder2k]

I have a problem where I have a string in a database such as:

$string = "this is a string with a number $12321 and another
number $1234512 and I'd like to add the commas in those numbers";

Can I use preg_replace to keep the string intact and add the appropriate commas into the numbers above?

I'd like to use:

$newstring = preg_replace($regexp, $replace, $string);

to make the final value of $string equal to:

this is a string with a number $12,321 and another
number $1,234,512 and I'd like to add the commas in those numbers

What do I use for the values for $regexp and $replace?

Thank you!

Jim

[bradgrafelman]

You could use [man]preg_replace_callback/man to call [man]number_format/man, e.g.:

$string = preg_replace_callback(
		'/(?<=\$)([0-9]+)/',
		create_function(
				'$num',
				'return number_format($num[0]);'
		),
		$string
);

Note that using number_format() with the default parameters assumes that you will only be dealing with integers. If that's not the case, adjust the parameters accordingly (or consider using [man]money_format/man instead).

[jsnyder2k]

Works like a charm! Thanks a ton for your help!