Add donor comments for donations where the comments were not added correctly

functions.php

<?php
function ed_add_missing_comment( $donation_id ) {
	$comment = get_post_meta( $donation_id, 'donor_comment', true );
	
	if ( empty( $comment ) ) {
		return;
	}
	
	$donation  = charitable_get_donation($donation_id );
	$donor     = $donation->get_donor();
	$campaigns = $donation->get_campaign_donations();

	$comments  = array();

	if ( isset( $donor->is_anonymous ) && $donor->is_anonymous ) {
		$comment_author = '';
	} else {
		$comment_author = trim( sprintf( '%s %s', $donor->__get('first_name'), $donor->__get('last_name') ) );
	}

	/**
	* Generally there will only be one campaign per donation, but the data
	* structure does support a single donation being for multiple campaigns.
	*/
	foreach ( $campaigns as $campaign ) {

		/**
		* Filter the comment data that will be passed to wp_insert_comment.
		*
		* @see   wp_insert_comment
		*
		* @since 1.0.0
		*
		* @param array                         $data      The comment data.
		* @param Charitable_Donation_Processor $processor Donation Processor object.
		*/

		$comment_data = array(
			'comment_post_ID'      => $campaign->campaign_id,
			'comment_author'       => $comment_author,
			'comment_author_email' => $donor->__get('email'),
			'comment_author_IP'    => '',// Set to empty string
			'comment_author_url'   => '',   // Set to empty string
			'comment_date'         => get_post_field( 'post_date', $donation_id, 'db' ),
			'comment_date_gmt'     => get_post_field( 'post_date_gmt', $donation_id, 'db' ),
			'comment_content'      => $comment,
			'comment_type'         => 'charitable_comment',
			'comment_parent'       => 0,  // Seems to be neccesary to prevent it using my last comment as the parent.
			'comment_meta'         => array(
			'donation_id'          => $donation_id,
			'is_anonymous'         => get_post_meta( $donation_id, 'anonymous_donation', true ) ? 1 : 0 ),
			'user_id'              => 0,  // Seems to be necesary to prevent it using my admin user id. Could be wrong sometimes but not a lot.
		);

		$comment_id = wp_new_comment( $comment_data, true );

		if ( $comment_id && ! is_wp_error( $comment_id ) ) {
			add_post_meta( $donation_id, '_donor_comment', $comment_id );

			$comments[] = $comment_id;
		}
	}//end foreach

	return $comments;	
}

// This should be an array of donation IDs where a comment was made but it's missing.
$missing_comments = array(
	123,
	234
);

foreach ( $missing_comments as $donation_id ) {
	ed_add_missing_comment( $donation_id );
}