PHP function to turn a string into a slug. Will transliterate characters and replace whitespace with `-`.

slugify.php

<?php

// @see http://stackoverflow.com/a/13331948/1640765
function slugify($str) {
    $str = transliterator_transliterate("Any-Latin; NFD; [:Nonspacing Mark:] Remove; NFC; [:Punctuation:] Remove; Lower();", $str);
    $str = preg_replace('/\s+/', '-', $str);

    return trim($str, '-');
}

echo slugify("  Radical'épil -   Antibes"); // radicalepil-antibes
echo "\n";