列出字母a到z只产生第一个字母a

I have the following code where I try to print alphabets from a to z in the first column. but I only get the letter "a" is printed through the entire column.

function print_table_tb ($conn, $id) {
    $sql = "SELECT stata,statb,statc FROM dbA";
    $result = $conn->query($sql);
    if ($result->num_rows > 0) {
        echo "<table class='tbr' id='tb$id'>";
        while($row = $result->fetch_assoc()) {
            $data = array_reduce($row, function($carry, $value) {
                $carry[] = "<td dbval='{$value}'>{$value}</td>";
                return $carry;
            }, []);

            $range = range('a', 'z');
            $i = 0;

            echo '<tr><td class="tbe">'.$range[$i++ % 26].'</td>'. implode('', $data) . "</tr>
" ;

        }

        echo "</table>";
    }
}  

What am I doing wrong here? thanks for your help! My question is different. I don't seek a solution to get alphabetical listing, I have the solution, but I couldn't fix an error.

I tried this but it doesn't work either.

function print_table_tb ($conn, $id) {
    $sql = "SELECT stata,statb,statc FROM dbA";
    $result = $conn->query($sql);
    if ($result->num_rows > 0) {

        $range = array("a", "b", "c", "d");
        $i = 0;

        echo "<table class='tbr' id='tb$id'>";
        while($row = $result->fetch_assoc()) {
            $data = array_reduce($row, function($carry, $value) {
                $carry[] = "<td dbval='{$value}'>{$value}</td>";
                return $carry;
            }, []);


            echo '<tr><td class="tbe">' . $range[$i] . '</td>'
                . implode('', $data) . "</tr>
" ;
            $i++;    
        }

        echo "</table>";
    }
}  

Try this

$range = range('a', 'z');
 $i = 0;  
 echo "<table class='tbr' id='tb$id'>";
    while($row = $result->fetch_assoc()) {
        $data = array_reduce($row, function($carry, $value) {
            $carry[] = "<td dbval='{$value}'>{$value}</td>";
            return $carry;
        }, []);
        $temp = ($i % 26);
        $i++;
        echo '<tr><td class="tbe">'.$range[$temp].'</td>'. implode('', $data) . "</tr>
" ;

  }