<?php
$arr=array(
"0"=> array(
0=> array (
"ID"=> 118,
"post_date"=> "2014-04-28 07:27:37",
"post_title"=> "Title 1"
),
1=> array (
"ID"=> 119,
"post_date"=> "2014-04-29 07:27:37",
"post_title"=> "title 2"
)
),
"1"=> array(
0=> array (
"ID"=> 135,
"post_date"=> "2014-04-28 06:37:37",
"post_title"=> "Title 3"
),
1=> array (
"ID"=> 148,
"post_date"=> "2014-04-25 07:27:37",
"post_title"=> "Title 4"
)
),
"2"=> array(
0=> array (
"ID"=> 135,
"post_date"=> "2014-04-24 06:37:37",
"post_title"=> "Title 5"
),
1=> array (
"ID"=> 148,
"post_date"=> "2014-04-25 09:21:37",
"post_title"=> "Title 6"
)
)
);
usort($arr, function($a, $b) {
return $a['post_date'] - $b['post_date'];
});
print_r($arr);
preferences:
49.82 ms | 402 KiB | 5 Q