这似乎是一个非常简单的练习，但它对我来说并不适合。
我有一个文本文档，并且觉得HTML化的一种简单方法是使用快速正则表达式将2个换行符转换为require "rubygems"
require "httparty"
response = HTTParty.post("https://fake-heroku-94488.herokuapp.com/api/v1/sign-in", :body => {:user_login => {:email => "fake@email.com", :password => "password123"}})
puts response.body, response.code, response.message, response.headers.inspect
，这对于我需要的内容来说非常简单。
因此;我的正则表达式：
</p><p>regex101.com中的 ，我通常会试用我的正则表达式。但在我的PHP中，它无法正常工作;
\n\h*\n+
/** This matches the newline,
then any number (zero or more) whitespace
and then a second new line. **/
我的意见：
$text = trim($_POST['text']);
$text = strip_tags($_POST['text']);
/*** Find new Paragraphs ***/
$text = preg_replace("/\n\h*\n/","</p>\n<p>",$text);
$text = "<p>".$text."</p>";
但我在PHP上的输出是：
30th Sep 16
Day 176 has seen more golf balls struck with growing frustration as I try
to train the brain, a short swim, and a dawning realisation which has led
to probably the biggest question that I have ever posed.
向<p>30th Sep 16
Day 176 has seen more golf balls struck with growing frustration as I try
to train the brain, a short swim, and a dawning realisation which has led
to probably the biggest question that I have ever posed.</p>
添加$count var会返回零，但未找到匹配项。
预期产出：
preg_replace我错过了什么？我确定它很简单，但我不明白它为何在网站上运行，而不是在我非常简单的脚本上： - /
我也尝试用<p>30th Sep 16 </p>
<p>Day 176 has seen more golf balls struck with growing frustration as I try
to train the brain, a short swim, and a dawning realisation which has led
to probably the biggest question that I have ever posed.</p>
代替\n以及其他各种代码排列，但没有成功。
答案 0 :(得分：1)