I’m creating an app in PHP to create an API and in reactjs for the front-end.

The server-side is responsible for making calls to WHM/cPanel APIs by returning the processed result to the client-side.
This process can take up to a couple of minutes, and from the client-side I receive an update every second of the currently processed data.

Now I start the process by using shell_exec and for following requests I get the data from the database that I think is slower and more heavy for the server.

There is another way to run a PHP process in background and access the variables of that process (without involving PHP server extensions)?

PHP

class Api
{
    
    public function getInfo(int $id = null)
    {
        //check for running complete scans if id is not provided by user
        $id = $id === null ? $this->db->select('scans', ['id'], ['status' => 'running', 'type' => 'complete',  'ORDER' => ['id' => 'DESC'], 'LIMIT' => 1])[0]['id'] : $id;
        if (!$id) {
            $this->db->insert('scans', [
                'type' => 'complete',
                'status' => 'running',
                'start' => date('Y-m-d H:i:s.u')
            ]);
            $id = $this->db->id();
            /**Start the getting the info in background */
            shell_exec("php " . __DIR__ . DS . "load-all-info.php " . $id . " > /dev/null 2>/dev/null &");
            return ege(['status' => 'success', 'process_id' => $id, 'proc_status' => 'running']);
        }
        //get process status and end time
        $query = $this->db->select('scans', ['status', 'scan_data'], ['id' => $id])[0];
        $procStatus = $query['status'];
        $scanData = $query['scan_data'];
        if ($scanData) {
            $scanData = json_decode($scanData, true);
            return ege(['status' => 'success', 'process_id' => $id, 'proc_status' => $procStatus, 'data' => $scanData]);
        }

        //get disk infos
        $cpusers = $this->db->select('cpusers', ['user', 'domain', 'plan', 'disk_total', 'disk_used', 'disk_perc'], ['scan_id' => $id]);
        //get emails infos
        $emails =
            $this->db->select('emails', ['login', 'user', 'email_total', 'email_used', 'email_perc', 'cpuser'], ['scan_id' => $id, 'ORDER' => 'cpuser']);
        //define array with disk infos and emails inside them
        $data = array();
        foreach ($cpusers as $cpuser) {
            $arrEmails = [];
            if (!empty($emails)) {
                foreach ($emails as $email) {
                    if ($cpuser['user'] !== $email['cpuser']) {
                        continue;
                    }
                    $email += ['status' => $this->setStatus($email['email_perc'], $email['email_total'], $email['email_used'])];
                    array_push($arrEmails, $email);
                }
            }
            $cpuser += ['status' => $this->setStatus($cpuser['disk_perc'], $cpuser['disk_total'], $cpuser['disk_used'])];
            $cpuser += ['emails' => $arrEmails];
            array_push($data, $cpuser);
        }
        if ($procStatus == 'complete' && !$scanData) {
            $dbData = ['date' => date('Y-m-d H:i:s.u'), 'data' => $data];
            $this->db->update('scans', [
                'scan_data[JSON]' => $dbData
            ], ['id' => $id]);
        }
        return ege(['status' => 'success', 'process_id' => $id, 'proc_status' => $procStatus, 'data' => $data]);
    }

JS

do {
    startTime()
    //genarate fetch request
    await api
    .get({ func: 'info', args: { scanId: scanId }, structure: '/{scanId}' })
    .then(myJson => {
        ...
        }
    })
    .catch(err => {})
    
    diffTime()
    //sleep for x ms
    await new Promise(r => setTimeout(r, timeDiff))
} while (scanCompleted === false)