<?php
$subject = "The price is $54.00 including delivery\n" .
           "On sale for £12.99 until December\n" .
           "European pricing €54.76 excluding UK";
$pattern = '/\p{Sc}\s*\d[.,\d]*(?<=\d)/u';
preg_match_all($pattern, $subject, $matches);
print_r($matches);
?>