オートコンプリートのために PHP を使用して MySQL にあいまいな会社名一致を実装するにはどうすればよいですか?

// Load MySQL stored function (if not already loaded)
if (!function_exists('Levenshtein')) {
    $sql = "CREATE FUNCTION Levenshtein(s1 VARCHAR(255), s2 VARCHAR(255)) RETURNS INT
    BEGIN
        DECLARE lv_s1, lv_s2 VARCHAR(255);
        DECLARE lv_len1, lv_len2, lv_i, lv_j, lv_c, lv_cost INT;
        DECLARE lv_arr1[255] INT;
    
        SET lv_s1 = LOWER(s1);
        SET lv_s2 = LOWER(s2);
        SET lv_len1 = LENGTH(lv_s1);
        SET lv_len2 = LENGTH(lv_s2);
    
        -- Initialize the array
        SET lv_arr1[1] = 0;
        FOR lv_i = 1 TO lv_len1 DO
            SET lv_arr1[lv_i + 1] = lv_i;
        END FOR;
    
        -- Step 2
        FOR lv_j = 1 TO lv_len2 DO
            SET lv_c = lv_j;
            FOR lv_i = 1 TO lv_len1 DO
                IF SUBSTRING(lv_s1, lv_i, 1) = SUBSTRING(lv_s2, lv_j, 1) THEN
                    SET lv_cost = 0;
                ELSE
                    SET lv_cost = 1;
                END IF;
                SET lv_c = LEAST(lv_c + 1, lv_arr1[lv_i] + lv_cost, lv_arr1[lv_i - 1] + 1);
                SET lv_arr1[lv_i] = lv_c;
            END FOR;
        END FOR;
    
        RETURN lv_c;
    END;";
    $result = $mysqli->query($sql);
}

// Execute fuzzy matching query
$numWords = 0;
$userInput = "Microsift";
$query = "SELECT company_name, Levenshtein('$userInput', company_name) AS distance
          FROM companies
          ORDER BY distance ASC";
$result = $mysqli->query($query);

// Display results
while ($row = $result->fetch_assoc()) {
    $numWords++;
    echo $row['company_name'] . " (" . $row['distance'] . ")\n";
}

if ($numWords == 0) {
    echo "No matches found.\n";
}