array_push or array_unshift multiple rows to top of same array PHP

Question

I have an array:

[0] => Array
    (
        [Id] => 1
        [Order] => 1
        [ContentGroupId] => 10
        [ContentGroupIsNew] => 0
 )

[1] => Array
    (
        [Id] => 2
        [Order] => 2
        [ContentGroupId] => 11
        [ContentGroupIsNew] => 0
 )
[2] => Array
    (
        [Id] => 3
        [Order] => 3
        [ContentGroupId] => 12
        [ContentGroupIsNew] => 1
 )
[3] => Array
    (
        [Id] => 4
        [Order] => 4
        [ContentGroupId] => 13
        [ContentGroupIsNew] => 1
 )
[4] => Array
    (
        [Id] => 5
        [Order] => 5
        [ContentGroupId] => 14
        [ContentGroupIsNew] => 0
 )

The default order is by [Order] I want to re-sort this array so that it orders by [ContentGroupIsNew] = 1 at the top (if any exist, in this sample 2 do exist), but keep the existing order of the remainder of elements.

If I use a usort function, I can get the [ContentGroupIsNew] = 1 but then the remainder of elements seems to get randomly ordered and not keep true to the original [Order] value.

So the final result should look like this:

[0] => Array
    (
        [Id] => 3
        [Order] => 3
        [ContentGroupId] => 12
        [ContentGroupIsNew] => 1
 )

[1] => Array
    (
        [Id] => 4
        [Order] => 4
        [ContentGroupId] => 13
        [ContentGroupIsNew] => 1
 )
[2] => Array
    (
        [Id] => 1
        [Order] => 1
        [ContentGroupId] => 10
        [ContentGroupIsNew] => 0
 )
[3] => Array
    (
        [Id] => 2
        [Order] => 2
        [ContentGroupId] => 11
        [ContentGroupIsNew] => 0
 )
[4] => Array
    (
        [Id] => 5
        [Order] => 5
        [ContentGroupId] => 14
        [ContentGroupIsNew] => 0
 )

PHP code:

function sort_array($b, $a) {
  return $a['ContentGroupIsNew'] - $b['ContentGroupIsNew'];
}

usort($array, 'sort_array');

What does your code look like? Modifying the condition in your `usort()` function should be easy. — jeroen, Feb 17 '17 at 08:15

score 1 · Accepted Answer · edited May 23 '17 at 12:34

1

foreach ($data as $key => $row) {
    $return_fare[$key]  = $row['ContentGroupIsNew'];
    $one_way_fare[$key] = $row['Id'];
}


array_multisort($return_fare, SORT_DESC, $one_way_fare, SORT_ASC, $data);
print_r($data);

found this solution here : PHP sort array by two field values

edited May 23 '17 at 12:34

Community

1
1

answered Feb 17 '17 at 08:34

Saba Tandashvili

117
2
11

This got me close, but the examples from that other solution [PHP sort array by two field values](http://stackoverflow.com/questions/4582649/php-sort-array-by-two-field-values) got me there. Thx. – Jeff Solomon Feb 17 '17 at 08:50
Glad to help, how current sorting code looks like ? just interested what did you change. – Saba Tandashvili Feb 17 '17 at 08:54
`usort($app_iaps, function($a, $b) { $rdiff = $b['ContentGroupIsNew'] - $a['ContentGroupIsNew']; if ($rdiff) return $rdiff; return $a['Order'] - $b['Order']; });` – Jeff Solomon Feb 17 '17 at 08:55

Dipali Sakle Systematix · Answer 2 · 2017-02-17T08:47:06.917

0

please try this

   function myCmp($a, $b)
    {
      return strcmp($b["ContentGroupIsNew"], $a["ContentGroupIsNew"]);
    }

    uasort($array, "myCmp")

echo "<pre>"; print_r($array);

edited Feb 17 '17 at 08:47

answered Feb 17 '17 at 08:28

Dipali Sakle Systematix

857
6
18

This didn't seem to work, but the next solution got me there. thx for help. – Jeff Solomon Feb 17 '17 at 08:48

array_push or array_unshift multiple rows to top of same array PHP

2 Answers2