<?

#################################
######  Mysql Replication Mapper #########
######     Lee Thompson ##############
######      Version 1.0   ###############
#################################

$user = "<username>";
$pass = "<password>";

$masterserver = $_REQUEST['master_server'];

$masterport = $_REQUEST['master_port'];
if ($masterport == '')
$masterport = '3306';

echo "Please enter a master server";
echo "<form method='post' action='$php_self'>";
echo "Server: <input type ='text' name='master_server' value='" . $masterserver . "'><br />";
echo "Port: <input type ='text' name='master_port' value='3306'><br />";
echo "<input type ='submit'><hr />";

$serverlist = array();

// fill data
$serverlist = query_slave_server($masterserver.":".$masterport);

// print data
print "<b>Master Server: </b>".$serverlist." on Port: ".$masterport . '<br />';

$array = query_server($serverlist);
print_server($array, 0);

function query_slave_server($server)
{
  global $user, $pass, $masterport, $masterserver;

  $sql ="show processlist";
        $foundmaster = FALSE;
        while ( $foundmaster === FALSE )
        {
    $con = mysql_connect($server.":".$masterport,$user,$pass) or die($server. mysql_error());
                $result = mysql_query($sql,$con);
                while ($row = mysql_fetch_array($result))
                {
                        $slaveuser = $row['User'];
                        if ($slaveuser=='system user')
                        {
                                $sql2 = "show slave status";
                                $result = mysql_query($sql2,$con);
                                while ($row2 = mysql_fetch_array($result))
                                {
                                        $smasterserver = $row2['Master_Host'];
                                        $smasterport = $row2['Master_Port'];
                                        $server = $row2['Master_Host'];
                                        $masterport = $row2['Master_Port'];
                                }
                                break;
                        }
                }
                if ( $slaveuser != 'system user' )
                {
                        $foundmaster = TRUE;
                }
        }
        return $server;
}

function query_server($mserver)
{
  global $user, $pass, $masterport;

  $sql ="show processlist";

  $con = @mysql_connect($mserver.":".$masterport,$user,$pass) or die(mysql_error());
  $result = @mysql_query($sql,$con);
  while ($row = @mysql_fetch_array($result))
  {
    $slave = $row['Host'];
    $slavehost = ereg_replace(":.*", "", $slave);
    $slavecmd = $row['Command'];
    if ($slavecmd=='Binlog Dump')
    {
      $current[$slavehost] = query_server($slavehost.":".$masterport);
    }
  }
  return $current;
}

function print_server($current, $depth)
{
  global $user, $pass;

  foreach ($current as $slave => $ary)
  {
    $conn2 = mysql_connect($slave,$user,$pass);
    $sql2 = "show slave status";
    $result2 = mysql_query($sql2, $conn2);
    while ($row2 = mysql_fetch_array($result2))
    {
      $slavecmd = $row2['Slave_IO_Running'];
      $slavecmd1 = $row2['Slave_SQL_Running'];
    }

      if ($slavecmd=='Yes' && $slavecmd1=='Yes')
      {
        $slaverunning = "Yes";
      }
      else
      {
        $slaverunning = "<font color ='red'>No</font>";
      }
    $local = "localhost";
    $lconn = mysql_connect($local,$user,$pass);
    $lsql = "select server_name from myman.server where primary_ip = '".ereg_replace(":.*", "", $slave)."'";
    $lresult = mysql_query($lsql, $lconn);
    while($lrow = mysql_fetch_array($lresult))
    {
      if ($depth > 0) print str_repeat('&nbsp;',10 * ($depth - 1));
      echo "&#160---&gt;&#160; ";
      echo $lrow[0]. " (" . $slave . ") Slave Running:" . $slaverunning . "(depth: $depth)<br />\n";
      if ($ary) print_server($ary, $depth + 1);
    }
  }
}
?>

Example Output:

Master Server: 172.1.1.102 on Port: 3306
 ---> testdb02 (172.1.1.103) Slave Running:Yes(depth: 0)
 ---> testdb03 (172.1.1.104) Slave Running:Yes(depth: 0)
 ---> testdb04 (172.1.1.105) Slave Running:Yes(depth: 0)
     ---> testdb04-02 (172.1.1.106) Slave Running:Yes(depth: 1)
     ---> devdb01 (172.1.1.107) Slave Running:Yes(depth: 1)
       ---> dc2testdb (172.1.1.108) Slave Running:Yes(depth: 2)
	  ---> dctestdb-02 (172.2.2.101) Slave Running:Yes(depth: 3)
	  ---> dctestdb-03 (172.2.2.102) Slave Running:Yes(depth: 3)
       ---> dc3testdb (172.1.1.108) Slave Running:Yes(depth: 2)
	 ---> dctestdb-02 (172.2.2.103) Slave Running:Yes(depth: 3)
---> devdb02 (172.3.3.101) Slave Running:Yes(depth: 0)
---> devdb03 (172.3.4.101) Slave Running:Yes(depth: 0)