CODEWITHSUNDEEP
phparrayssorting
steeped
steeped

Reputation: 2633

Sorting through a two dimensional array - PHP

I have a 2D array in php which holds the date:

$cal[$year][$month] = $event;

Output of the array is:

Array ( [2012] => Array ( [6] => 10.92 [11] => 16.38 [8] => 1.3 [9] => 16.96 )

I would like to sort the array by year and month. How do I do this?

Thank you!

Upvotes: 0

Views: 118

Answers (2)

Nelson Benítez León
Nelson Benítez León

Reputation: 50573

According to your following array:

$cal[$year][$month] = $event;

and taking into account that $year and $month are both numeric (if not, just cast them).

For ordering both years and months in ASCENDING order, do:

ksort($cal); //sort years
foreach($cal as &$arr) {
   ksort($arr); //sort months
}

if you want it in DESCENDING order, do:

krsort($cal); //sort years
foreach($cal as &$arr) {
   krsort($arr); //sort months
}

you can interchange ksort() and krsort() in both examples if you want a mix sort, like years ASCENDING and months DESCENDING.

Upvotes: 0

Stormsson
Stormsson

Reputation: 1541

you should look to the array_multisort function, you can find informations here: http://php.net/manual/en/function.array-multisort.php

the second example is what you are looking for

Upvotes: 1

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