The sequence of regular expressions negates the problem of surround-look

Source: Internet
Author: User
Tags php foreach
What I want to match is like this:

{% foreach $data $key $value %}233{% endforeach %}2333333{% foreach $data $key $value %}233{% endforeach %}

To match the contents of the first foreach, write a regular expression that looks like a

preg_match_all('/{%\s*foreach\s*(\$\S+)\s*(\$\S+)\s*(\$\S+)\s*%}((?!endforeach)[\s\S]*){%\s*endforeach\s*%}/i', $page, $match);

Because there are two foreach, so I used a negative look, that's the middle part

[\s\s]*]

    • -Match the results with no added (?! Endforeach), just started to look around--Daniel

Reply content:

What I want to match is like this:

{% foreach $data $key $value %}233{% endforeach %}2333333{% foreach $data $key $value %}233{% endforeach %}

To match the contents of the first foreach, write a regular expression that looks like a

preg_match_all('/{%\s*foreach\s*(\$\S+)\s*(\$\S+)\s*(\$\S+)\s*%}((?!endforeach)[\s\S]*){%\s*endforeach\s*%}/i', $page, $match);

Because there are two foreach, so I used a negative look, that's the middle part

[\s\s]*]

    • -Match the results with no added (?! Endforeach), just started to look around--Daniel

Do you want to imitate the implementation of the template engine?
I think what you want is to transform what you want to match into something like this:


  
    $value): ?>233
  
   

In this case, it should not be used to look around, it is easier to solve.

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