sort array based on the dateTime in php

Question

Array
        (
            [0] => Array
                (
                    [dateTime] => 2011-10-18 0:0:00
                    [chanl1] => 20.7
                 


        

Answer 1

Simple sorting for DateTime objects with the spaceship operator:

$list = [
    new DateTime('yesterday'),
    new DateTime('today'),
    new DateTime('1 week ago'),
];

uasort($list, function ($a, $b) {
    return $a <=> $b;
});

var_dump($list);