在重定向之前回显Javascript警报，usleep（2000000）？ - PHP CodeIgniter

Question

I'm trying to have a javascript alert, after a database interaction and before a page redirect (back to the same page, but displaying the updated data).

I thought having a pause before the redirect with usleep() might work, but it seems to ignore it. If I comment out the redirect it takes me to the controller page, where the alert pops up.

Any ideas?

Here's my code:

function connect () {
    $client_id = $this->uri->segment(3);
    $related_id = $this->uri->segment(5);
    $related_name = $this->uri->segment(6);

    $uri_segments= $this->session->userdata('segments');
    $uri = base_url()."index.php".$uri_segments;

    if (!$this->uri->segment(4)) {
    $this->load->model('get_clients_model');
    $data['records'] = $this->get_clients_model->getAllClients();
    $this->load->view('clients_all_related',$data);
    }

    elseif ($this->uri->segment(4) == "add") {

        $this->load->model('get_clients_model');
        $data['record'] = $this->get_clients_model->getSingleClient($client_id,$related_id,$related_name);

        echo "<script>javascript:alert('".$data['record']."');</script>";
        usleep(2000000);
        redirect($uri); // send back to previous page with updated related contact

    }
}

The relevant part is in the elseif.

As a side note if anyone knows a better way to do this other than the alert, which is just showing a success / fail message, then that would also be welcome.

Thanks!

Answer 1

My suggestion would be to have the Javascript handle the redirect instead of the PHP. That way, your PHP script isn't just taking control. Perhaps you are running into a caching issue or something like that with your output.

Anyway, simple. The Javascript outputs the alert, which blocks the redirect from happening until after the user acknowledges it.

echo "<script>javascript:alert('".$data['record']."'); window.location = '".$uri."'</script>";