I'm sitting on this for a long time and can't find a solution:
By using the function json_ encode in php file (script below) i receives data from mysql as group of arrays e.g. ["9,8","15,14","18,17","29,40,10,9"],in the main file by use $.parseJSON function(script below), 
receives a array with indexed object as ["9,8","15,14","18,17","29,40,10,9"....] 
instead [9,8,15,14,18,17,29,40,10,9],
How merge all this object together??
I tried to use $.merge function, but doesn't work.Help??;-)
/////receive.php file//////
$ask = mysql_query("SELECT numbers FROM bying");
if(!ask)
{
    die('incorrect ask'.mysql_error());
}
else{
    $tab = array();
    while ($row = mysql_fetch_assoc($ask)) 
    {
    $data=$row['numbers'];
    array_push($tab,$data);
}
echo json_encode($tab);
mysql_free_result($ask);
}
html file with $.parseJSON function
$.post('receive.php', function(data) 
                {
                 var table1=[];
                 table1 = $.parseJSON(data);
                  var numbers=$.merge([],table1);)
                  for(var i=0;i<numbers.length;i++)
                  {
                   alert(numbers[i]); 
                  }
}  
 
     
     
    