Post 2 different form actions with 2 submit buttons - php

Question

I have a table where I use an UPDATE button with action form to update the data. But I also need to submit the table using another form action and submit button.
Here's my button:
<button class="btn btn-info" type="submit" name="update" value="update">Update Table</button>
<button class="btn btn-success" type="submit" name="submit_req" value="submit_req">Submit Request</button>
This is currently my form action for the table:
<form method="post" action="">
And this is my PHP if else statement. The first submit_req is supposed to POST to another URL. But I don't know how to do it. I already tried header, but it won't work.
<?php
if(isset($_POST['update'])){
if(!empty($_SESSION['cart'])){
foreach($_POST['quantity'] as $key => $val){
if($val==0){
unset($_SESSION['cart'][$key]);
}else{
$_SESSION['cart'][$key]['quantity']=$val;
}
}
}
}elseif (isset($_POST['submit_req'])) {
//form action: insert_order.php
}
?>

Answer 1

You can use a JS function to redirect to another page for the submit button
Here page.php is where you want to send your form to. formID is the id of the form.
<button class="btn btn-success" type="submit" name="submit_req" value="submit_req" onclick="submitForm('page.php')">Submit Request</button>
<script type="text/javascript">
function submitForm(action)
{
document.getElementById('formID').action = action;
document.getElementById('formID').submit();
}
</script>