[
 {
   Name0: "TEST",
   Value0: "13",
   Timestamp0: "2012-01-02 00:00:13"
 },
{
   Name0: "TEST",
   Value0: "16",
   Timestamp0: "2012-01-02 00:10:45"
 }
],
[
 {
   Name1: "TEST",
   Value1: "30",
   Timestamp1: "2012-01-02 00:00:13"
 },
{
   Name1: "TEST",
   Value1: "60",
   Timestamp1: "2012-01-02 00:10:45"
 }
]
       
[
 {
   Name0: "TEST",
   Value0: "13",
   Timestamp0: "2012-01-02 00:00:13",
   Name1: "TEST",
   Value1: "30",
   Timestamp1: "2012-01-02 00:00:13"
 },
{
   Name0: "TEST",
   Value0: "16",
   Timestamp0: "2012-01-02 00:10:45",
   Name1: "TEST",
   Value1: "60",
   Timestamp1: "2012-01-02 00:10:45"
 }
]
       
$loop_length = count($array[0]);
$new_array = array();
for($i=0; $i<$loop_length; $i++){
    for($j=0; $j<count($array); $j++){
        if(!array_key_exists($j,$new_array)) $new_array[$j] = array();
        $new_array[$j] = array_merge($new_array[$j],$array[$i][$j]);
    }
}
 
var_dump($new_array);
       
<?php
    for ($i = 0; $i < count($array[0]); $i++) {
        $array[0][$i] = array_merge($array[0][$i], $array[1][$i]);
    }
    $array = $array[0];
?>
       
<?php
 
    $arr1 = array(array('name0' => 'foo', 'val0' => '10'),
            array('name0' => 'cde', 'val0' => '11'));
    $arr2 = array(array('name1' => 'bar', 'val1' => '20'),
            array('name1' => 'fgh', 'val0' => '21'));
 
    $arr_mrg = array();
 
    for($i=0; $i<count($arr1); $i++){
         $arr_mrg[$i] = array_merge($arr1[$i], $arr2[$i]);
    }
 
    var_dump($arr_mrg); //test output of the result
 
?>