arrays - How to sort multikey in php? -


this question has answer here:

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 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 

 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 sort multikey in php? beginner in php. using following code in php out put not correctly. if 1 of datewise or monthwise sort, output come correctly. otherwise both (datewise or monthwise), output not come correctly. plz 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;  });

the following code job. strtotime parses text date 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); });

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