$inventory = array(
array("type"=>"fruit", "price"=>3.50),
array("type"=>"milk", "price"=>2.90),
array("type"=>"pork", "price"=>5.43),
);
$price = array_column($inventory, 'price');
array_multisort($price, SORT_DESC, $inventory); $weight = [
'Pete' => 75,
'Benjamin' => 89,
'Jonathan' => 101
];
ksort($weight);
usort($array, function ($a, $b) {
return ($a['specific_key'] < $b['specific_key']) ? -1 : 1;
});
$inventory = [
['price' => 10.99, 'product' => 'foo 1'],
['price' => 5.99, 'product' => 'foo 2'],
['price' => 100, 'product' => 'foo 3'],
];
$price = array_column($inventory, 'price');
array_multisort($price, SORT_DESC, $inventory);To PHP sort array by key, you should use:
ksort() (for ascending order) or krsort() (for descending order).
To PHP sort array by value, you will need functions:
asort() and arsort() (for ascending and descending orders).ksort(array &$array, int $sort_flags = ?): int