preg_split results in connection reset

preg_split("/({{\s*(?:(?!}}).)+\s*}})/s", file_get_contents('data.txt'));

That line makes Apache reset the connection. data.txt is approximately 12 kB.

What am I doing 开发者_C百科wrong, can I optimize the regex somehow?

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Try this regular expression instead:

/({{(?>(?:[^}]|}[^}])+)}})/s

The main improvements:

• (?>…) – atomic grouping to avoid backtracking
• (?:[^}]|}[^}])+ – no look-around, no non-greedy matching

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Try reading the file into a variable than passing it to preg_split. I think it's file_get_contentsproblem rather thanpreg_split`.