How Can I Read To Text Files And Compare Them Letter By Letter

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I want to read two text files and output the percent of similarity of them and which letters where unsimilar. The first part i can do it with the function similar_text($text1, $text2, $percent), but i really how to do the 2nd part. Any ideas??
Thanks in advance

Posted 13-Feb-14 3:15am

pedrag

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-02-13T07:20:00

This is what you can use: http://us3.php.net/file_get_contents[^].

Read one and another file into string and compare the obtained string the way you need. However, the criteria for "similarity" can be not trivial. I am not sure if it even makes sense, but this is up to you to decide what criteria you need to apply.

—SA