How to sort by key within multidimensional array

Question

I made this fictional membership list. I'd like to maintain the order of the sub arrays (class year) while sorting by descending key within each sub array.

$pledges = array(
  'smith'     => "Joe Patterson",
  'jones'     => "Robert Nelson",
  'davis'     => "Jimmy Davis",
  'carpenter' => "Mike Carpenter");

$sophomores = array(
  'ford'      => "Kevin Ford",
  'gomez'     => "Pedro Gomez",
  'miller'    => "Jack Miller",
  'pullman'   => "Lucas Pullman");

$juniors = array(
  'bradford'  => "Nicholas Bradford",
  'daniels'   => "Robert Daniels",
  'soren'     => "Jon Soren",
  'cooper'    => "Harrison Cooper");

$seniors = array(
  'mcdonald'  => "Casey McDonald",
  'witten'    => "Tim Witten",
  'session'   => "Benjamin Sessions",
  'redding'   => "Jack Redding");

How do I do that? Thanks a bunch.

Seth · Accepted Answer · 2011-07-30 04:56:46Z

1

The PHP manual has a good example of what you're looking to do.

http://www.php.net/manual/en/function.ksort.php#98465

answered Jul 30, 2011 at 4:56

Seth

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Rukmi Patel · Accepted Answer · 2011-07-30 04:54:16Z

0

by using ksort function of PHP you can sort array key wise.

ksort($pledges);
array_reverse($pledges);
and like wise for others....

what you have posted is single dimension array and be aware that ksort will be only applicable to single dimension array.

answered Jul 30, 2011 at 4:54

Rukmi Patel

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