К примеру, есть такой массив объектов:
[0] => stdClass Object
(
[prop1] => 25
[prop2] => 3143413
[prop3] => array(
'arr_prop1' => '54353',
'arr_prop2' => '2423',
'arr_prop3' => '2343'
)
)
[1] => stdClass Object
(
[prop1] => 25
[prop2] => 3146280
[prop3] => array(
'arr_prop1' => '54354',
'arr_prop2' => '123',
'arr_prop3' => '634'
)
)
[2] => stdClass Object
(
[prop1] => 24
[prop2] => 3149972
[prop3] => array(
'arr_prop1' => '342',
'arr_prop2' => '123',
'arr_prop3' => '543'
)
)
[3] => stdClass Object
(
[prop1] => 24
[prop2] => 3162714
[prop3] => array(
'arr_prop1' => '12',
'arr_prop2' => '54',
'arr_prop3' => '754'
)
)
как его отсортировать по значению 'arr_prop1'?