How to trigger a modal popup from a php header? - php

Question

I am trying to create a protection php page where visitor has to login before accessing a page. The visitor will be prompt to login with a modal form. May I know how I can achieve this?
Here is the anchor leading to community.php that will require login before access:
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Here is the community.php (I haven't built much of the page yet):
<?php include "protection.php" ?>
<?php include "webhead.php" ?>
Here is my protection php page:
<?php
session_start();
if($_SESSION['login_status'] != "ok") {
header("location:modallogin.php");
}
?>
Here is my modal html:
<div id="loginModal" class="modal fade">
<div class="modal-dialog modal-login">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">Please Login</h4>
<p></p>
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<div class="modal-body">
<form action="checklogin.php" method="post">
<div class="form-group">
<label for="loginModalName">Username</label>
<input type="text" class="form-control" name="name" id="loginModalName" placeholder="Please enter your username" required="required">
<p></p>
<label for="loginModalPassword">Password</label>
<input type="password" class="form-control" name="password" id="loginModalPassword" placeholder="Please enter your password" required="required">
</div>
<div class="form-group">
<button type="submit" class="btn btn-lg btn-block login-btn" style="background-color: #fdbf50 !important; color: #f4f4f8 !important;">Login</button>
</div>
</form>
</div>
<div class="modal-footer">Join us now!</div>
</div>
</div>
</div>
</div>

Answer 1

Modal windows are displayed via Javascript on the client side, for example like this. You need to send the user back to the home page with a toast message telling them to log in first.
Your redirect is not correct, HTTP requires a space after the : like this
header("Location: modallogin.php");