Title: IPN Callback Function
Last modified: October 6, 2020

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# IPN Callback Function

 *  Resolved [denz73](https://wordpress.org/support/users/denz73/)
 * (@denz73)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/ipn-callback-function/)
 * Hi,
 * I’m a newbie when it comes to WP plugins. Kudos for the plugin as it makes the
   integration to PayPal quite simple.
 * I understand that I need my_callback_function to process my backend transactions.
   What I’d like to know is where do I put add_action so it would be safe and not
   be erased in case the plugin is updated?
 * The my_callback_function can exist as a separate php, right?
 * Thank you.
 * Denz
 * function my_callback_function($ipn_response) {
    // do stuff } add_action(‘wp_paypal_ipn_processed’,‘
   my_callback_function’);

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Noor Alam](https://wordpress.org/support/users/naa986/)
 * (@naa986)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/ipn-callback-function/#post-13499208)
 * [@denz73](https://wordpress.org/support/users/denz73/), You can create a custom
   plugin for it or add it to your theme’s functions.php file.
 *  Thread Starter [denz73](https://wordpress.org/support/users/denz73/)
 * (@denz73)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/ipn-callback-function/#post-13505567)
 * Thank you. I have a follow-up question.
 * I created a PayPal subscription for a digital subscription for a monthly/yearly
   payment. Your plugin does work for this purpose but it seems like the IPN I’ve
   set inside PayPal’s notifications isn’t being called. Or am I’m doing something
   wrong?
 * How do I set up an IPN being called every time a payment is made?
 * Cheers!
 * Denz
    -  This reply was modified 5 years, 6 months ago by [denz73](https://wordpress.org/support/users/denz73/).

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘IPN Callback Function’ is closed to new replies.

 * ![](https://ps.w.org/wp-paypal/assets/icon-128x128.png?rev=2722398)
 * [Payment Button for PayPal](https://wordpress.org/plugins/wp-paypal/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-paypal/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-paypal/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-paypal/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-paypal/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-paypal/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [denz73](https://wordpress.org/support/users/denz73/)
 * Last activity: [5 years, 6 months ago](https://wordpress.org/support/topic/ipn-callback-function/#post-13505567)
 * Status: resolved