PHP Multidimensional values ​​array_reverse

I need to reverse the order values

in array

:

// My current array looks like this
// echo json_encode($array);

    { "t" : [ 1, 2, 3, 4, 5, 6 ],
      "o" : [ 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 ],
      "h" : [ 1.2, 2.2, 3.2, 4.2, 5.2, 6.2 ]
     }

      

        
        
        
      

    

I need to invert values

while saving keys

so it looks like this:

// echo json_encode($newArray);

    { "t" : [6, 5, 4, 3, 2, 1 ],
      "o" : [ 6.6, 5.5, 4.4, 3.3, 2.2, 1.1],
      "h" : [ 6.2, 5.2, 4.2, 3.2, 2.2, 1.2 ]
     }

      

        
        
        
      

    

What I have tried without success:

<?php
$newArray= array_reverse($array, true);
echo json_encode($newArray);
/* The above code output (Note that the values keep order):
  {
    "h":[1.2, 2.2, 3.2, 4.2, 5.2, 6.2]
    "o":[1.1, 2.2, 3.3, 4.4, 5.5, 6.6]
    "t":[1,2,3,4,5,6]
   }       

*/
 ?>

      

        
        
        
      

    

After reading a similar question here also tried the following but with no success:

<?php
$k = array_keys($array);

$v = array_values($array);

$rv = array_reverse($v);

$newArray = array_combine($k, $rv);

echo json_encode($b);

/* The above code change association of values = keys, output:
  { "h": [1.1, 2.2, 3.3, 4.4, 5.5, 6.6],
    "o": [1,2,3,4,5,6],
    "t": [1.2, 2.2, 3.2, 4.2, 5.2, 6.2]
  }
  ?>

      

        
        
        
      

    

Thanks a lot for your time.