Question

I am returning JSON from a web service using PHP. I am able to get the JSON, decode it, and see the results. However, I need to be able to sort the array by a particular value. I currently have:

// JSON URL which should be requested
$json_url = 'https://*******/maincategories';

// Initializing curl
$ch = curl_init( $json_url );

// Configuring curl options
$options = array(
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => array('Content-type: application/json') ,
);

// Setting curl options
curl_setopt_array( $ch, $options );

// Getting results
$result =  curl_exec($ch); // Getting JSON result string

$data = json_decode($result);

ksort($data, "Total");

print_r($data);

The print_r($data); prints this:

Array ( [0] => stdClass Object ( [Goal] => 10000000 [Name] => Rental [Total] => 500000 ) [1] => stdClass Object ( [Goal] => 8000000 [Name] => National Sales [Total] => 750000 ) [2] => stdClass Object ( [Goal] => 120000000 [Name] => Vendor Leasing [Total] => 500000 ) )

I was attempting to use ksort and sort the array by ascending order via the Total key. How can I sort this array so that the object with the highest total is first, and the rest follow in ascending order?

Answer 1

This should work for you:

usort($data, function ($a, $b) {
    return $a->Total - $b->Total;
});

Note that if you want an associative array instead of objects from json_decode, then use json_decode(..., true)