正则表达式从字符串中获取货币和金额

问题描述

我有一个正则表达式 preg_match('/(?<=\$)\d+(\.\d+)?\b/', $str, $regs 返回我以货币表示的金额，但我正在尝试获取与金额相关的符号.

I have an Regex with me preg_match('/(?<=\$)\d+(\.\d+)?\b/', $str, $regs which return me the amount in a currency, but what i am trying is to get the symbol associated with the amount too.

1) 例如字符串是 $300.00 要价 应该返回 $300.00 但现在它返回 300
2) 例如字符串是 EUR 300.00 应该返回 EUR300.00 但现在它返回 300

1) E.g. the string is $300.00 asking price should return $300.00 but now it returns 300
2) E.g. the string is EUR 300.00 should return EUR300.00 but now it returns 300

只是我想要带金额的货币.

Simply i want the currency with amount.

谢谢

推荐答案

首先，您匹配可以是 $ 或 EUR 的货币，然后是可选的空格:

First, you match the currency which can be either $ or EUR, followed by optional white space:

(?:EUR|[$])\s*

然后，匹配主数字组，后跟可选句点和两位数字:

Then, match the main digit group, followed by an optional period and two digits:

\d+(?:\.\d{2})?

总的来说，我们得到了这个:

In total we get this:

$pattern = '/(?:EUR|[$])\s*\d+(?:\.\d{2})?/';
if (preg_match($pattern, $string, $matches)) {
    echo $matches[0];
}

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