Json operations in PHP -

i have mysql database reading php:

$con = mysqli_connect($host, $user, $pwd, $db);  if(mysqli_connect_errno($con)) {     die("failed connect mysql: " . mysqli_connect_error()); }     $sql = "select grad lista";  $result = mysqli_query($con, $sql);  $rows = array();  while($row = mysqli_fetch_array($result, mysqli_assoc)) {    $rows[] = $row;  }  mysqli_close($con);  $arr = array_flip(array_map('serialize', $rows)); $lista = array_map('unserialize', array_flip($arr)); echo json_encode((object) array('lista' => array_values($lista))); 

and localhost getting this:

{"lista":[{"grad":"beograd"},{"grad":"novi_sad"},{"grad":"kragujevac"}]} 

is there way this:

{"lista":[{"grad":"odaberite grad"},{"grad":"beograd"},{"grad":"novi_sad"},{"grad":"kragujevac"}]} 

i add {"grad":"odaberite grad"} in front of everything. thank in advance.

edit: please not {"grad":"odaberite grad"} not part of mysql table

have tried adding want after declaring $arr follows:

$rows = array(); $rows[] = array('grad' => 'odaberite grad'); 

update:

alternatively other answerers have pointed out can use array_unshift follows:

array_unshift($rows, array('grad' => 'odaberite grad'));