Remove string length limit from levenshtein() #6286
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As noted on https://bugs.php.net/bug.php?id=80073, I don't think having this limitation makes sense. The similar_text() function has much worse asymptotic complexity than levenshtein() and does not enforce such a limitation. levenshtein() does have fairly high memory requirements, but they are a fixed factor of the string length (and subject to memory limit).