使用preg_match在字符串中查找百分比值 [英] Find a percentage value in a string using preg_match

问题描述

我正在尝试隔离文本字符串中的百分比值.使用preg_match应该很容易，但是因为在preg_match中使用百分号作为运算符，所以我无法通过搜索找到任何示例代码.

I'm trying to isolate the percentage value in a string of text. This should be pretty easy using preg_match, but because the percentage sign is used as an operator in preg_match I can't find any sample code by searching.

$string = 'I want to get the 10%  out of this string';

我想结束的是:

$percentage = '10%';

我的猜测是我需要类似的东西:

My guess is that I'll need something like:

$percentage_match = preg_match("/[0-99]%/", $string);

我确定对此有一个非常快速的答案，但是解决方案使我无所适从！

I'm sure there is a very quick answer to this, but the solution is evading me!

推荐答案

if (preg_match("/[0-9]+%/", $string, $matches)) {
    $percentage = $matches[0];
    echo $percentage;
}

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