Wanna load another php file when im done with button_submit - php

Question

<?php function my_plugin_settings_page() {?>
<div class="wrap">
<h2>Staff Details</h2>
<form method="post" action="options.php">
<?php settings_fields( 'my-plugin-settings-group' ); ?>
<?php do_settings_sections( 'my-plugin-settings-group' ); ?>
<table class="form-table">
<tr valign="top">
<th scope="row">Accountant Name</th>
<td><input type="text" name="accountant_name" value="<?php echo esc_attr( get_option('accountant_name') ); ?>" /></td>
</tr>
<tr valign="top">
<th scope="row">Accountant Phone Number</th>
<td><input type="text" name="accountant_phone" value="<?php echo esc_attr( get_option('accountant_phone') ); ?>" /></td>
</tr>
</table>
<?php submit_button( 'Save Settings', 'primary', 'wpdocs-save-settings' );
if (isset($_GET['submit'])) {
header('Location: wamp\www\wordpress\wordpress\wp-content\plugins\MaximoPlugin\andra.php');
exit;
}?>
</form>
</div>
My question is, can i redirect a user to another php file in wordpress by adding action to the button_submit ?
So it has like two events. Saving and then redirect the user to another page.
Is this possible on a way. BTW im new to php and wordpress so im sorry for the bad code and stuff.
the if statement isent any good i know, but how can i check if the buttons is submitted and then redirect the user to another wordpress page..(another php site.)
Please give me some input for what i can do or should do.
EDIT:
Ok i changed it to a include, but dont get any response.
</table>
<?php submit_button();
if(isset($_POST['submit']))
{
include('andra.php');
}
}?>

Answer 1

You can use wp_redirect http://codex.wordpress.org/Function_Reference/wp_redirect to redirect the user to another URL. Simply save your data before redirect call.
<?php
wp_redirect( $location, $status );
exit;
?>

Answer 2

The questions is not very clear so I will show two solutions, you can pick the one suits you more:
SOLUTION 1:
Make another file handle_my_request.php
Change the following lines in your code:
<?php submit_button( 'Save Settings', 'primary', 'wpdocs-save-settings' );
if (isset($_GET['submit'])) {
include_once("handle_my_request.php");
exit;
}?>
Now in handle_my_request.php, you can easily write the way you want to handle the request. Eg.
<?php
$var1 = $_GET['myvar1'];
do_something($var1);
?>
SOLUTION 2:
You manually need to make another form and post the fields to the other page you want. For this to happen, you can either GET/POST on server side through PHP (using CURL) or you can GET/POST through javascript on client side.
<?php function my_plugin_settings_page() {?>
<div class="wrap">
<h2>Staff Details</h2>
<form method="post" action="options.php">
<?php settings_fields( 'my-plugin-settings-group' ); ?>
<?php do_settings_sections( 'my-plugin-settings-group' ); ?>
<table class="form-table">
<tr valign="top">
<th scope="row">Accountant Name</th>
<td><input type="text" name="accountant_name" value="<?php echo esc_attr( get_option('accountant_name') ); ?>" /></td>
</tr>
<tr valign="top">
<th scope="row">Accountant Phone Number</th>
<td><input type="text" name="accountant_phone" value="<?php echo esc_attr( get_option('accountant_phone') ); ?>" /></td>
</tr>
</table>
</form>
<?php
submit_button( 'Save Settings', 'primary', 'wpdocs-save-settings' );
if (isset($_GET['submit']))
{ ?>
<form name="redirection_form" action="http://anotherwebsite.com" method="post">
<input type="hidden" name="accountant_name" value="<?php echo esc_attr( get_option('accountant_name') ); ?>" />
<input type="hidden" name="accountant_phone" value="<?php echo esc_attr( get_option('accountant_phone') ); ?>" />
</form>
<script type="text/javascript">
document.redirection_form.submit();
</script>
<?php } ?>
</div>
Needless to say here that you need to change the variables and method and action of the form to match the next page you are redirecting to.
As I said before, the same can be achieved by PHP CURL.

Answer 3

<form method="post" action="options.php">
<input type='hidden' name='option_page' value='my-plugin-settings-group' /><input type="hidden" name="action" value="update" /><input type="hidden" id="_wpnonce" name="_wpnonce" value="fc1447e3e7" /><input type="hidden" name="_wp_http_referer" value="/wordpress/wordpress/wp-admin/admin.php?page=my-plugin-settings&settings-updated=true" /> <table class="form-table">
<tr valign="top">
<th scope="row">Accountant Name</th>
<td><input type="text" name="accountant_name" value="1" /></td>
</tr>
<tr valign="top">
<th scope="row">Accountant Phone Number</th>
<td><input type="text" name="accountant_phone" value="1" /></td>
</tr>
</table>
<p class="submit"><input type="submit" name="wpdocs-save-settings" id="wpdocs-save-settings" class="button button-primary" value="Save Settings" /></p>
This is the source view. And yes the andra.php is in same directory.
Im making a plugin for Wordpress, do it have something to do with that ?