Strip All Except Numbers

[BlackRaven]

is there a function in PHP that will strip all character except numbers?

[leatherback]

$new_string = ereg_replace("[^0-9]", "", $string);
, I think

[coopster]

I think so too ;)

I often use the perl compatible expressions [php.net] though as they are a faster alternative:

$number = preg_replace("/[[:^digit:]]/", '', $number);

Either solution should work.