Creates a CSV file to be imported on google calendar with the pregnancy weeks from a base date

agenda_gestacional.php

<?php
class Evento {
    public $subject;
    public $startDate;
    public $startTime = '';
    public $endDate = '';
    public $endTime = '';
    public $allDay = 'True';
    public $description = '';
    public $location = '';
    public $private = '';

    public function toArray():array {
        return get_object_vars($this);
    }
    public static function getHeaders():array {
        return [
            'Subject',
            'Start Date',
            'Start Time',
            'End Date',
            'End Time',
            'All day event',
            'Description',
            'Location'
        ];
    }

}


$fh = fopen('php://memory', 'wb+');
fputcsv($fh, Evento::getHeaders());
$base = DateTimeImmutable::createFromFormat('Y/m/d', '2019/10/25');
foreach(range(0, 42) as $week) {
    $evento = new Evento;
    $evento->subject = sprintf('%d semana de gestação', $week);
    $evento->startDate = $base->add(DateInterval::createFromDateString($week . ' weeks'))->format('Y/m/d');
    $evento->endDate = $base->add(DateInterval::createFromDateString($week . ' weeks'))->format('Y/m/d');

    fputcsv($fh, $evento->toArray());
}

fseek($fh, 0);

$result= stream_get_contents($fh);
fseek($fh, 0);
file_put_contents('~/Downloads/agenda_gestacional.csv', $result);
echo $result . PHP_EOL;