<?php
include ("connect.php");
$alphabet=str_split('абвгдеёжзиклмнопрстуфхцчшщьыъэюя',2);
foreach($alphabet as $letter){
 echo "<a href='?letter=$letter'>$letter</a>";
 }
if(!empty($_GET['letter'])){
    $letter = substr($_GET['letter'], 0, 1);
    if(preg_match('/^[а-яa-z]$/i', $letter)){
          $sql = "SELECT * FROM `phonenote` WHERE LEFT(`fname`, 1) = '$letter'";
  $query = mysql_query($sql);
  while ($row = mysql_fetch_assoc($query))
  {
  echo "<table><tr><td>'.$row[fname].'</td><td>.'$row[id].'</td></tr></table>";
  }
 }
}
  
?>