在php字符串中查找相同的两个字符之间的文本

问题描述：

So I know how to extract text from a php string when it is cleanly separated by two different characters (ie. [abc])...

However, I am now facing a problematic situation where I need to extract text that is located between two instances of the same character ('/'). What makes it even trickier is that this can happen multiple times within the same string.

An example should help make this clearer:

"This is /a/ silly ex/amp/le of what I /me/an."

In this case, I would want to grab 'a', 'amp' and 'me'.

These examples show the variety of cases I might run into (different lengths and cases where I'm not grabbing a whole word but letters within a word).

What I've tried:

('/(\/.+?)+(\/)/i')

But this, as expected, captures everything between the first and last slashes. The ideal would be a way to match until the NEXT occurrence of a slash, rather than the last one...

I've been googling this for quite some time, but am only coming up with cases with two different delimiters.

所以我知道如何从php字符串中提取文本，当它被两个不同的字符干净地分开时（即。[ abc]）... p>

但是，我现在面临一个问题，我需要提取位于同一个字符（'/'）的两个实例之间的文本。甚至更棘手的是，这可能会在同一个字符串中多次发生。 p>

一个例子应该有助于使这个更清晰： p>

   “这是/ a /傻傻的ex / amp / le我的/me/an."

在这种情况下，我想抓住'a'，'amp'和'me' code>。 p>

这些例子显示了我可能遇到的各种案例（不同的长度和案例，我没有抓住一个整个单词，但单词中的字母）。 p>


我尝试了什么： p> 
 
 
 （'/（\ /.+？）  +（\ /）/ i'）
  code>  pre> 
 
 但是，正如预期的那样，它会捕获第一个和最后一个斜杠之间的所有内容。 理想的是匹配直到NEXT出现斜杠的方式，而不是最后一个......  p> 
 
 
我一直在谷歌搜索这段时间，但我只是来了 具有两个不同分隔符的案例。 p> 
  div>

答

You can use preg_match_all to get multiple matches.

$string = 'This is /a/ silly ex/ampl/e of what/ I me/an';
$regex = '/\/.+?\//';
preg_match_all($regex, $string, $matches);

print_r($matches);


Array
(
    [0] => Array
    (
        [0] => /a/
        [1] => /ampl/
        [2] => / I me/
    )
)

答

Try this:

(\/)(.*?)\1

What is inside of (\/) will be what you're matching between. For example, matching between a set of * would look like this:

(\*)(.*?)\1

Regex101

在php字符串中查找相同的两个字符之间的文本

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