reg expression help

[eluser]Michael Ekoka[/eluser]
I see. The script that handles these forum's post changed my single quotes into forward ticks. I should have enclosed it in code tags. Here it is again, untransformed:

Code:

preg_match_all('/-?[0-9]+(?:\.[0-9]+)?/' , $marker, $matches);
$a = $matches[0][0];
$b = $matches[0][1];