Convert a bunch of vCard (VCF files) to a CSV file output

composer.json

{
    "name": "scott/vcf-to-csv",
    "require": {
        "jeroendesloovere/vcard": "^1.7"
    }
}

vcf_to_csv.php

<?php
require_once __DIR__ . '/vendor/autoload.php';

use JeroenDesloovere\VCard\VCardParser;

$vcf_files = glob(__DIR__ . '/Contacts/*.vcf');

/**
 * VCF get the first item of type from property array.
 *
 * @param array $array Property array.
 * @param string $type Type string.
 *
 * @return string Item value.
 */
function vcf_get_item($array, $type) {
	if (array_key_exists($type, $array) && count($array[$type])) {
		return $array[$type][0];
	}

	return '';
}

/**
 * Flatten VCF Data for CSV file.
 *
 * @param object $vcf_data VCF Data object.
 *
 * @return array Array hash of address data we care about.
 */
function flatten_vcf_data($vcf_data) {
	return [
		'Full Name' => $vcf_data->fullname,
		'First Name' => $vcf_data->firstname,
		'Last Name' => $vcf_data->lastname,
		'Home Email' => property_exists($vcf_data, 'email') ? strtolower(vcf_get_item($vcf_data->email, 'home')) : '',
		'Work Email' =>  property_exists($vcf_data, 'email') ? strtolower(vcf_get_item($vcf_data->email, 'work')) : '',
		'Mobile Phone' => property_exists($vcf_data, 'phone') ? vcf_get_item($vcf_data->phone, 'mobile') : '',
	];
}

$csv_lines = [
	['Full Name', 'First Name', 'Last Name', 'Home Email', 'Work Email', 'Mobile Phone'],
];

foreach($vcf_files as $vcf_file) {
	$parser = VCardParser::parseFromFile($vcf_file);

	foreach($parser as $vcard) {
		$csv_lines[] = flatten_vcf_data($vcard);
	}
}

$fh = fopen('contacts.csv', 'wb');
foreach($csv_lines as $csv_line) {
	fputcsv($fh, $csv_line);
}
fclose($fh);