usort

array(10) { [1019]=> array(3) { ["quantity"]=> int(0) ["revenue"]=> int(0) ["seller"]=> string(5) "Lenny" } [1018]=> array(3) { ["quantity"]=> int(5) ["revenue"]=> int(121) ["seller"]=> string(5) "Lenny" } [1017]=> array(3) { ["quantity"]=> int(2) ["revenue"]=> int(400) ["seller"]=> string(6) "Anette" } [1016]=> array(3) { ["quantity"]=> int(25) ["revenue"]=> int(200) ["seller"]=> string(6) "Samuel" } [1015]=> array(3) { ["quantity"]=> int(1) ["revenue"]=> int(300) ["seller"]=> string(6) "Samuel" } [1014]=> array(3) { ["quantity"]=> string(2) "41" ["revenue"]=> string(5) "18409" ["seller"]=>

If have a rather basic uasort function in PHP that looks like this: uasort($arr, function($a, $b) { if ($a > $b) return -1; if ($a < $b) return 1; ... } The array I'm trying to sort looks like the following: {[1642] => 1, [9314] => 4, [1634] => 3 ...} It contains integers that are my main comparison criteria. However, if the integers are equal, then I would like to access their key values, inside the uasort function and do some magic with it to figure out the sorting from there. I have no clue how to do that as it seems that the $a and $b variables that get passed into the function are just

What I'm trying to do is sort a multi-dimensional array that contains decimal values. From what I've tested, floats are having trouble being ordered properly. Array ( [0] => Array ( [company] => Ebay [weight] => 4.6 ) [1] => Array ( [company] => Ebay [weight] => 1.7 ) [2] => Array ( [company] => Ebay [weight] => 3.7 ) ) usort($array, 'order_by_weight'); // Sorts DESC highest first function order_by_weight($a, $b) { return $b['weight'] - $a['weight']; } What is the best way to sort these numbers in descending? $arr = array( array('company' => 'A', 'weight' => 4.6), array('company' => 'B',

I have an array like the following: Array ( [0] => Array ( 'name' => "Friday" 'weight' => 6 ) [1] => Array ( 'name' => "Monday" 'weight' => 2 ) ) I would like to grab the last values in that array (the 'weight'), and use that to sort the main array elements. So, in this array, I'd want to sort it so the 'Monday' element appears before the 'Friday' element. You can use usort as: function cmp($a, $b) { return $a['weight'] - $b['weight']; } usort($arr,"cmp"); Can be done using an anonymous function . Also if your 'weight' is a string use one of the other returns (see the commented out lines): <

I have looked at the php documentation, tutorials online and none of them how usort is actually working. I have an example i was playing with below. $data = array( array('msg' => 'some text','month' => 11,'level' => 10), array('msg' => 'some text','month' => 5,'level' => 10), array('msg' => 'some text','month' => 8,'level' => 10), array('msg' => 'some text','month' => 12,'level' => 10), array('msg' => 'some text','month' => 2,'level' => 10), array('msg' => 'some text','month' => 3,'level' => 10), array('msg' => 'some text','month' => 4,'level' => 10), array('msg' => 'some text','month' => 7,

I am currently creating a sorting method that consists of values from an mysql query. Here's a brief view of the array: Array ( [0] => Array ( ['id'] = 1; ['countries'] = 'EN,CH,SP'; ) [1] => Array ( ['id'] = 2; ['countries'] = 'GE,SP,SV'; ) ) I have succeeded in making a normal usort based on the numeric id values, but I rather want to sort the array by the content of the "countries" field (if it contains a set string, a country code in this case), and then by the id field. The following snippet was my first idea of how to do it, but I have no idea of how to incorporate it into an working