How to sort array by subarray key and value

Question

Hello everybody :) this is my first question, so I hope for answer :) I've got an array of arrays like this :

Array(
    [] => Array ([category] => 3 )
    [] => Array ([price] => 5 )
    [] => Array ([rating] => 1 )
    [] => Array ([price] => 3 )
    [] => Array ([category] => 1 )
    [] => Array ([category] => 2 )
    )
)

Question : How could I sort it for ex. alphanumerically by subarray key and subarray value, so that it is converted like the one following?

Array(
    [] => Array ([category] => 1 )
    [] => Array ([category] => 2 )
    [] => Array ([category] => 3 )
    [] => Array ([price] => 3 )
    [] => Array ([price] => 5 )
    [] => Array ([rating] => 1 )
)

possible duplicate of Sort Multi-dimensional Array by Value

dynamic
– dynamic

2014-11-09 16:44:00 +00:00
Commented Nov 9, 2014 at 16:44 — dynamic
– dynamic, Commented Nov 9, 2014 at 16:44

georg · Accepted Answer · 2014-11-09 16:51:27Z

2

You're looking for array_multisort:

$x = Array(
    Array ("category" => 3 ),
    Array ("price" => 5 ),
    Array ("rating" => 1 ),
    Array ("price" => 3 ),
    Array ("category" => 1 ),
    Array ("category" => 2 ),

);

array_multisort(
    array_map('key', $x), 
    array_map('current', $x), 
    $x);

print_r($x);

answered Nov 9, 2014 at 16:51

georg

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