Reverse the order of a multiple-elements array in PHP -


this question has answer here:

i looked quite bit around (like here array-sort-comparisons), , tried figure out how sort (or reverse) multiple-elements array. in vain.

i have 3 elements in array, , want sort "year" asc: 

array(52) {   [0]=>   array(3) {     ["id"]=>     string(2) "si"     ["year"]=>     string(4) "2012"     ["value"]=>     string(7) "3711339"   }   [1]=>   array(3) {     ["id"]=>     string(2) "si"     ["year"]=>     string(4) "2011"     ["value"]=>     string(7) "3810626"   }   [2]=>   array(3) {     ["id"]=>     string(2) "si"     ["year"]=>     string(4) "2010"     ["value"]=>     string(7) "3714946"   }

how possible? somehow 1 needs able specify of 3 elements "key" basis of sorting.

thanks hints!

use usort() custom comparison function:

usort($arr, function (array $a, array $b) {     return $a['year'] - $b['year']; });

demo


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