How to sort array using object element in php?

Question

I have following php array object:

"requests": [
{           
   "id": 111,
   "time: 123123123,
   "data": "testc"
},    
{                  
   "id":  200 ,
   "time: 433123123,
   "data": "testb"
},    
{
   "id":  300 ,
   "time:  33123123,
   "data": "testb"
}
]

I want to sort it by requests->time only. How to do it?

I don't want sort by id. All data should be sort as per time ASC.

if you are geting this data from query then use ORDER BY time ASC there only. otherwise use usort() — Death-is-the-real-truth
– Death-is-the-real-truth, Commented Jul 25, 2016 at 12:16
Using objects (as asked) - maybe interesting? eval.in/611600 — Ryan Vincent
– Ryan Vincent, Commented Jul 25, 2016 at 14:19

ddb · Accepted Answer · 2016-07-25 12:18:15Z

2

supposing you have that array in a $requests variable, the following should work

<?php
    function cmp($a, $b)
    {
        return strcmp($a["time"],$b["time"]);
    }
    usort($requests, "cmp");

    //print for test
    while (list($key, $value) = each($requests)) {
        echo "\$requests[$key]: " . $value["time"] . "\n";
    }

?>

answered Jul 25, 2016 at 12:18

ddb

2,4317 gold badges31 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jean B. · Accepted Answer · 2016-07-25 17:44:23Z

1

You have to use your own sort method with usort()

Solution :

<?php
function sortByTimeASC($a, $b)
{
    if ($a->time == $b->time) {
        return 0;
    }
    return ($a->time < $b->time) ? -1 : 1;
}

$a = json_decode('[{"id": 111,"time": 123123123,"data": "testc"},{ "id":200 ,"time":433123123,"data":"testb"},{"id":300,"time":33123123,"data":"testb"}]');

usort($a, "sortByTimeASC");
print_r($a);
?>

Live example

answered Jul 25, 2016 at 17:44

Jean B.

1766 bronze badges

Collectives™ on Stack Overflow

How to sort array using object element in php?

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related