Basic csv export for WP Store Locator

wpsl-export.php

<?php
        
    //bootstrap WP    
    require_once('wp-load.php');//I have this file saved in the site root

    $stores = get_posts([
        'post_type' => 'wpsl_stores',
        'posts_per_page' => -1,
        'post_status' => 'any'
    ]);


    if(!empty($stores)){

        $output = [];

        $headings = ['title','categories','wpsl_address','wpsl_address2','wpsl_city','wpsl_state','wpsl_zip','wpsl_country','wpsl_lat','wpsl_lng','wpsl_phone','wpsl_email','wpsl_fax','wpsl_url','wpsl_country_iso','wpsl_hours','show_at_checkout'];

        $output[] = $headings;


        foreach($stores as $store){



            $row = [];

            $meta = get_post_meta($store->ID);

            foreach($headings as $key){
                if($key == 'title'){
                    $row[$key] = $store->post_title;
                }
                elseif($key == 'categories'){
                    $cats = wp_get_object_terms($store->ID,'wpsl_store_category');
                    if(!empty($cats) && !is_wp_error($cats)){
                        $cat_names = array_map(function($cat){
                            return $cat->name;
                        },$cats);
                        $cat_names = implode('|', $cat_names);
                    }
                    else{ $cat_names = ''; }
                    $row[$key] = $cat_names;
                }
                elseif($key == 'wpsl_hours'){
                    $hours = unserialize($meta[$key][0]);
                    $row[$key] = !empty($meta[$key][0]) ? json_encode($hours) : '';//JSON is easier to read, I will need to convert this back when importing
                }
                else{
                    $row[$key] = $meta[$key][0];
                }
            }

            $output[] = $row;

        }

        header("Content-Type: text/csv");
        header("Content-Disposition: attachment; filename=stores" . time() . ".csv");

        $outstream = fopen("php://output", 'w');
        function __outputCSV(&$vals, $key, $filehandler) {
            fputcsv($filehandler, $vals, ',', '"');
        }
        array_walk($output, '__outputCSV', $outstream);
        fclose($outstream);


    }//if()