I have an array of products and i want to sort them with another array.
$products = array(
0 => 'Pro 1',
1 => 'Pro 2',
2 => 'Pro 3'
);
$sort = array(1,2,0);
array_multisort($products, $sort);
Array should now be ...
$products = array(
0 => 'Pro 2',
1 => 'Pro 3',
2 => 'Pro 1'
);
I don't seem to be using array_multisort correctly. Ive tried different ways for 2 hours now...
It seems like this is more appropriate than a sort:
$products = array_map(function($i) use ($products) {
return $products[$i];
}, $sort);
array_multisort sorts the 2nd array and applies the sorting order to the 1st one. To do your job the sorting array has to be $sort = array(2,0,1); (implies: bring 2nd element to 0, 3rd element to 1 and 1st element to 2).
You simply can use
foreach ($sort as $key) {
$sorted_products[] = $products[$key];
}
array_multisort() will not do what you are trying to achieve with that particular code.
Here is a function that will:
function sort_by_other_array ($input, $order) {
$result = array();
foreach ($order as $item) {
$result[] = $input[$item];
}
return $result;
}
This does not error checking but will do what you want. You may need to add checks to ensure that the keys specified in $order are present in $input.
$sortarray?array(1,2,0)it should be3,1,2, when you want2,3,1you should usearray(2,0,1)array_multisort($sort, $products), the array needs to be[2,0,1]. Think of it in terms of "I want the first element of$productsto be @ index 2, the second element to be at index 0, and the third element to be at index 1." With your current array, you just need to use some form of iteration (i.e.,array_map) as the answers given illustrate.