Pods Changed Fields Email Notification

gistfile1.php

/*
This function will send an admin email notification with the field values that have changed on a Pods->form()
*/

add_filter('pods_api_pre_save_pod_item', 'my_pre_save_function', 10, 2); 
function my_pre_save_function($pieces, $is_new_item) { 		
	add_filter( 'wp_mail_content_type', 'set_html_content_type' );
	
	//Check to see if request was submitted from a specific front-end WordPress page
	if($_POST[_podsfix__pods_location] == "/members/manage-your-profile/?success=1") {		
	    //Fields we want to check against
		$fields = array(
			'name',
			'last_name',
			'preferred_name',
			'suffix',
			'title',
			'address_1',
			'city',
			'state',
			'zip',
			'email',
			'display_email',
			'phone',
			'mobile_phone',
			'display_mobile',
			'firm',
			'display_map',
			'photo',
			'section',
			'member_id',
			'spouse_first_name',
			'spouse_last_name',
			'membership_status',
			'membership_type'
		);
		
		$member_pod = pods( 'members', $pieces['params']->id );
		
		$changed_fields = array();
		
		$i = 0;
		
		//Loop through fields and check if submitted data is different from the DB
		//Save Old/New Value pairs in $changed_fields if different
		
		foreach($fields as $single_field) {
			//Check if submitted data is different from current data
			if($member_pod->field($single_field) != $_POST['_podsfix_pods_field_'.$single_field]) {
				$changed_fields[$i]['Label'] = $member_pod->fields( $single_field, 'label' );
				$changed_fields[$i]['New Value'] = $_POST['_podsfix_pods_field_'.$single_field];
				$changed_fields[$i]['Old Value'] = $member_pod->field($single_field);
				
				$i++;
			}
		}
		
		//Build HTML String for Email
		$html_string = "<h2>Information Updated for ". $member_pod->field('name') ." ". $member_pod->field('last_name') ." (Member #".$member_pod->field('member_id').")</h2>";
		
		//Loop through $changed_fields and add to Email Message String
		foreach($changed_fields as $changed_field) {
			$html_string .= '<p><strong>'.$changed_field['Label'].'</strong></p>';
			$html_string .= '<ul><li>Old Value: '.$changed_field['Old Value'].'</li>';
			$html_string .= '<li>New Value: '.$changed_field['New Value'].'</li></ul>';			
		}
	
		//Send Email
		$admin_email = get_option('admin_email');
		
		wp_mail( $admin_email, 'Member Updated', $html_string );
	}
	remove_filter( 'wp_mail_content_type', 'set_html_content_type' );
}

function set_html_content_type() {
	return 'text/html';
}