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copied!<p>Even you have around 1 500 lines, the problem you like to solve is per each line.</p> <p>If you are able to process the input <em>line by line</em> you have already reduced the problem by a fair amount.</p> <pre><code>$file = new SplFileObject($path); foreach ($file as $i => $line) { printf("#%'0-4d: %s\n", $i, $line); } </code></pre> <p>This is just an example, naturally, the regular expression engine itself can do something similar with it's multiline modifier (m). However if you do the foreach above, you could <code>break</code> directly for testing with the first line:</p> <pre><code>foreach ($file as $i => $line) { printf("#%'0-4d: %s\n", $i, $line); $pattern = '(^\d++ <A NAME="([^"]++)"><A HREF="xtrastats.html#Philip McRae">Philip McRae</A> C L OK 58 71 69 49 33 89 71 45 48 69 50 35 32 61 21 3 787 000)$'; $r = preg_match($pattern, $line, $matches); if (FALSE === $r) { throw new Exception(sprintf("Regex failed (%d)", preg_last_error()); } if (!$r) { throw new Exception(sprintf("Pattern does not match.")); } var_dump($matches); if ($i > 0) break; # exit foreach after X lines. } echo "Done.\n"; </code></pre> <p>As you can see in this example, the pattern is yet incomplete, but you work out from the full line replacing step by step.</p> <p>It also makes use of an anchor for the beginning of the string (<code>^</code>) and for the end of the string (<code>$</code>).</p> <p>It also makes use of possessive quantifiers (<code>+</code>) so that if those don't match, no backtracking occurs (similar to atomic grouping, but easier to write).</p> <p>Continue to improve your regular expression pattern step by step. If the regex does not compile, an exception is thrown. As well as when a line does not match.</p> <p>You should get your stuff done after some time, improve the error handling and create some stable an efficient code in the long run.</p>

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