php añadir a array
$myArr = [1, 2, 3, 4];
array_push($myArr, 5, 8);
print_r($myArr); // [1, 2, 3, 4, 5, 8]
$myArr[] = -1;
print_r($myArr); // [1, 2, 3, 4, 5, 8, -1]
agregar objeto en array php
$myArray = array("name" => "my name");
echo json_encode($myArray);