How to sort multikey in php? [duplicate] - php

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How can I sort arrays and data in PHP?
(14 answers)
Closed 7 years ago.
Array ( [0] => stdClass Object ( [Id] => 18
[AccNo] => 1
[Title] => Hardware
[Description] => Mobile.
[ManuDate] => 8th July 1942
[MusCat] => Album
[month] => 7
[date] => 8 )
[1] => stdClass Object ( [Id] => 20
[AccNo] => 2
[Title] => Food
[Description] => Apple.
[ManuDate] => 27th July 1942
[MusCat] => Album
[month] => 7
[date] => 27 )
[2] => stdClass Object ( [Id] => 24
[AccNo] => 3
[Title] => Hardware
[Description] => Computer.
[ManuDate] => 2nd July 1942
[MusCat] => Album
[month] => 7
[date] => 2 )
[3] => stdClass Object ( [Id] => 56
[AccNo] => 4
[Title] => Hardware
[Description] => Printer
[ManuDate] => 1942
[MusCat] => Album
[month] =>
[date] => 0 )
[4] => stdClass Object ( [Id] => 105
[AccNo] => 5
[Title] => Object
[Description] => Chair.
[ManuDate] => 1942
[MusCat] => Album
[month] =>
[date] => 0 ) )
This is my array input Like
Id Date Title Description
0 8th July 1942 Hardware Mobile
1 27th August 1942 Food Apple
2 2nd July 1942 Hardware Computer
3 1942 Hardware Printer
4 1942 Object Chair
I want output like
Id Date Title Description
************************************************************
3 1942 Hardware Printer
4 1942 Object Chair
2 2nd July 1942 Hardware Computer
0 8th July 1942 Hardware Mobile
1 27th August 1942 Food Apple
How to sort multikey in php?
I am beginner in Php. I am using following code in php but out put will not correctly. If any one of datewise or monthwise sort, Output will come correctly. otherwise both (datewise or monthwise), Output will not come correctly. Plz help any solution.
usort($value['year'], function ($a, $b) {
if ($a->date == $b->date) return 0;
return $a->date < $b->date ? -1 : 1;
});
usort($value['year'], function ($a, $b) {
if ($a->month == $b->month) return 0;
return $a->month < $b->month ? -1 : 1;
});

Answer 1

The following code does the job. strtotime parses text date into a Unix timestamp.
usort($array, function($v1, $v2) {
$d1 = strlen($v1->ManuDate) === 4 ? '01-01-' . $v1->ManuDate : $v1->ManuDate;
$d2 = strlen($v2->ManuDate) === 4 ? '01-01-' . $v2->ManuDate : $v2->ManuDate;
return strtotime($d1) - strtotime($d2);
});