- print_r: documentation ( source)
- ksort: documentation ( source)
<?php
$arr = [];
$o = new stdclass();
$o->id = 11591;
$o->title = 'abc';
$arr[3] = $o;
$o = new stdclass();
$o->id = 11592;
$o->title = 'xyz';
$arr[2] = $o;
$o = new stdclass();
$o->id = 11589;
$o->title = 'abg';
$arr[0] = $o;
$o = new stdclass();
$o->id = 11590;
$o->title = 'asw';
$arr[1] = $o;
ksort($arr);
print_r($arr);