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<?php //差分を見て前回から更新があったかどうか確認 $old_article = fopen('./test_old.txt',"r"); $new_article = fopen('./test_new.txt',"r"); fclose($old_article); fclose($new_article); $diff = xdiff_string_diff($old_article, $new_article, 1); if (is_string($diff)) { echo "2 つの記事の差分:\n"; echo $diff; } ?>

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