Gravity Perks // GP Post Content Merge Tags // Use Merge Tags from Form A in HTML Field on Form B w/ Gravity PDF

gp-post-content-merge-tags-gravity-pdf-form-a-to-form-b.php

<?php
/**
 * Gravity Perks // GP Post Content Merge Tags // Use Merge Tags from Form A in HTML Field on Form B w/ Gravity PDF
 * http://gravitywiz.com/documentation/gravity-forms-post-content-merge-tags/
 */
add_action( 'gfpdf_pre_pdf_generation', function( $form, $entry, $settings, $pdf ) {

	// Update "123" to the ID of your Form B.
	$target_form_id = 123;
	// Update "3" to the field ID of your Source Pretty ID field.
	$pretty_id_field_id = 3;

	$pretty_id = rgar( $entry, $pretty_id_field_id );
	if( ! function_exists( 'gp_post_content_merge_tags' ) || $form['id'] != $target_form_id || ! $pretty_id ) {
		return;
	}

	$_GET['eid'] = $pretty_id;

}, 10, 4 );