Multi-array - What am I missing?

Can anyone point me in the right direction? I know I am missing something
simple, but I can't place my hands on it.

$myCalTime = act_getCalendarDays($config, $myMonth, $myYear);

foreach($myCalTime as $calTime =$calArrayTime){
$calArray[] = $calArrayTime['day']."=>array('NULL','linked-day
".strtolower($calArrayTime['reason'])."','".$calArrayTime['day']."'),";
}

act_getCalendarDays returns this
Array
(
[day] =Array
(
[0] =05
[1] =06
[2] =26
[3] =27
)

[reason] =Array
(
[0] =Vacation
[1] =Vacation
[2] =Vacation
[3] =Vacation
)

)


What am I missing to get this
=>array('NULL=','linked-day ',''),

to look like this
05=>array(NULL,'linked-day vacation','05'),