Laravel Array output [0] => 1 [1] => 2 [2] => 3 [3] => 4 -

i displayed data database using following code

$mani = db::select('select id employee'); 

output :

array (      [0] => stdclass object (                 [id] => 1             )      [1] => stdclass object (                 [id] => 2             )      [2] => stdclass object (                 [id] => 3             )      [3] => stdclass object (                 [id] => 4             )  ) 

i need following exact output :

array (      [0] => 1      [1] => 2      [2] => 3      [3] => 4  ) 

please share solution. thank you

change code use pluck() instead, change

$mani = db::select('select id employee'); 

to

$mani = db::table('employee')->pluck('id');