- var_dump: documentation ( source)
- json_encode: documentation ( source)
<?php
$o = new stdClass;
$o->name = "John";
$o->age = 30;
$o->car =null;
$o2 = new stdClass;
$o2->name = "Mike";
$o2->age = 32;
$o2->car =null;
$myarray = [$o, $o2];
var_dump(json_encode($myarray));