php 正则表达式 字符串中提取带小数点的数字

<?php
$patterns = '/(\d+)\.(\d+)/is';
$total = "42.234 EUR 53.218 AUD CAD97.164 311.151 MYR 125.042 NZD GBP84.270 SGD60.227 USD134.400";
preg_match_all($patterns,$total,$arr);
var_dump($arr);

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