luos/workflow/engine/methods/processes/processes_DeleteCases.php

<?php

use ProcessMaker\Model\Delegation;
use ProcessMaker\Model\SubProcess;

/**
 * processes_DeleteCases.php
 *
 * Deleting all Cases of a Process
 *
 * @link https://wiki.processmaker.com/3.2/Processes#Deleting_all_Cases_of_a_Process
 */

global $RBAC;
$RBAC->requirePermissions('PM_DELETE_PROCESS_CASES', 'PM_FACTORY');
$resp = new stdClass();
try {
    $uids = explode(',', $_POST['PRO_UIDS']);
    $process = new Process();
    foreach ($uids as $uid) {
        $parents = SubProcess::getProParents($uid);
        if (!empty($parents)) {
            if (Delegation::hasActiveParentsCases($parents)) {
                $resp->status = false;
                $resp->msg = G::LoadTranslation('ID_CANT_DELETE_SUB_PROCESS_PARENT_HAS_ACTIVE_CASES');
                echo G::json_encode($resp);
                die();
            }
        }
        $process->deleteProcessCases($uid);
    }

    $resp->status = true;
    $resp->msg = G::LoadTranslation('ID_ALL_RECORDS_DELETED_SUCESSFULLY');

    echo G::json_encode($resp);
} catch (Exception $e) {
    $resp->status = false;
    $resp->msg = $e->getMessage();
    $resp->trace = $e->getTraceAsString();
    echo G::json_encode($resp);
}