nextcloud-server/settings/ajax/setquota.php

<?php

// Init owncloud
require_once('../../lib/base.php');

OC_JSON::checkAdminUser();

$username = $_POST["username"];
$quota= OC_Helper::computerFileSize($_POST["quota"]);

// Return Success story
OC_Preferences::setValue($username,'files','quota',$quota);
OC_JSON::success(array("data" => array( "username" => $username ,'quota'=>OC_Helper::humanFileSize($quota))));

?>
add option to set user quota 14 years ago			`<?php`

			`// Init owncloud`
			`require_once('../../lib/base.php');`

Use OC_JSON for json responses Create OC_JSON class, for single point of creating json responses. No real logic change, this just cleans up the code a bit. 14 years ago			`OC_JSON::checkAdminUser();`
add option to set user quota 14 years ago
			`$username = $_POST["username"];`
			`$quota= OC_Helper::computerFileSize($_POST["quota"]);`

			`// Return Success story`
			`OC_Preferences::setValue($username,'files','quota',$quota);`
after editing a user quota, set the value of the quota field to how the server parsed the input, not the user input this way the user can see when an invalid input is given 13 years ago			`OC_JSON::success(array("data" => array( "username" => $username ,'quota'=>OC_Helper::humanFileSize($quota))));`
add option to set user quota 14 years ago
			`?>`