Can someone explain this function to me ?

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It's part of a larger exercise that consists in encrypting a message with the Caesar code.

The goal is to find the longest word. the longest word will then be the number of letters used for the Cesar code shift.

What I have tried:

PHP

function cmp($str1, $str2) {
    $length1 = strlen($str1);
    $length2 = strlen($str2);

    if ($length1 == $length2)
        return 0;

    return ($length1 < $length2) ? -1 : 1;
}

Posted 19-Aug-22 22:17pm

Member 15742563

Updated 19-Aug-22 23:08pm

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OriginalGriff · Accepted Answer · 2022-08-19T23:08:00

Ignoring that Caesar Cypher isn't encryption at all, it's a basic translation which is regularly cracked by grandmothers from a monthly magazine fool of them ...

That compares two string lengths: you pass it two strings, if they are the same length it returns 0, if the first is shorter it returns -1, otherwise 1