How to pass variable from functions.php to a custom page.

Hi,

I’m trying to pass a variable that stored the value from API to a custom thank you page. May I know how can I get the $cert_url from functions.php and use it on custom thank you page?

Code below is from functions.php

add_action( 'woocommerce_thankyou', 'custom_woocommerce_auto_complete_order' );
function custom_woocommerce_get_cert_url( $order_id ) {
    ......
    $data = json_decode($request);
	
    $result[]= $data;
		
    foreach($result[0] as $line) {
        $cert_url = $line;
    }

    return $cert_url;
}

Note: $cert_url is a variable I want to pass to a custom page.

On the custom thank you page, I’m trying use code below to create a button to share the cert url to facebook.

<a href="https://www.facebook.com/sharer?u='.$cert_url.'&t=Digital-Certificate" target="_blank" rel="noopener noreferrer">Share this on Facebook</a>

Please correct me if there is anything wrong from the code I mentioned above.

Best Regards,
Wenlu

• This topic was modified 2 years, 6 months ago by wenlu.
• This topic was modified 2 years, 6 months ago by Jan Dembowski. Reason: Formatting