关于匹配本文中几小时几分钟的问题
一段文本可能会出现这样几种情况：
用了 1小时43分钟
用了 1小时
用了 43分钟
要实现的是从文本中匹配出这个时间，即加粗部分
现在想到的正则表达式是preg_match('/([0-9]+小时[0-9]+分钟|[0-9]+小时|[0-9]+分钟)/is', $txt, $matches)
虽然能够正确匹配出想要的结果，但是感觉不够简洁，请问如何改进？
回复讨论(解决方案)
加粗只是视觉效果，分开来加并无影响
$s =<<< TXT一段文本可能会出现这样几种情况：用了1小时43分钟用了1小时用了43分钟TXT;echo preg_replace('/\d+(小时|分钟)/', '<b>$0</b>', $s);一段文本可能会出现这样几种情况：用了<b>1小时</b><b>43分钟</b>用了<b>1小时</b>用了<b>43分钟</b>
我不是为了加粗，是为了提取出加粗部分这样子的文字。会有三种情况，就是包含小时和分钟、只有小时、只有分钟。
加粗只是视觉效果，分开来加并无影响
$s =<<< TXT一段文本可能会出现这样几种情况：用了1小时43分钟用了1小时用了43分钟TXT;echo preg_replace('/\d+(小时|分钟)/', '<b>$0</b>', $s);一段文本可能会出现这样几种情况：用了<b>1小时</b><b>43分钟</b>用了<b>1小时</b>用了<b>43分钟</b>
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