Reads a CSV of IMDB List Data and outputs a .ics compatible data for their 25x anniversaries

index.php

<?php // PHP >= 7.1 (because of the ical library used)

// Autoload file comes from composer
require_once __DIR__.'/../vendor/autoload.php';

// composer require eluceo/ical
// https://packagist.org/packages/eluceo/ical
use Eluceo\iCal\Component\Calendar;
use Eluceo\iCal\Component\Event;

function createAllDayEvent(\DateTimeInterface $day, $summary = '', $description = '') {
    $event = new Event();
    $event->setDtStart($day);
    $event->setDtEnd($day);
    $event->setNoTime(true);
    $event->setSummary($summary);
    $event->setDescription($description);
    return $event;
}

// This is the date to start adding events (defaults to today)
$earlyBounds = new DateTimeImmutable('');
// This is the date which it will not add any events after this date.
$lateBounds = new DateTimeImmutable('December 31, 2099');

$calendar = new Calendar('Anniversaries');

// Reads a csv from this file path (IMDB list export formatted)
$csvHandle = fopen(__DIR__.'/../data.csv', 'r');
// Throw away the header row.
$headerRow = fgetcsv($csvHandle);
while($data = fgetcsv($csvHandle)) {
    $data = array_combine($headerRow, $data);
    unset($data["Position"], $data["Const"], $data["Created"], $data["Modified"]);
    // Create a cursor starting at the release date of the movie
    $dateCursor = new \DateTimeImmutable($data['Release Date']);
    // This will be the event description in the calendar event.
    $eventDescription = <<<EOT
{$data["Title"]} ({$dateCursor->format('Y')})
Runtime: {$data["Runtime (mins)"]} minutes
Rating: {$data["IMDb Rating"]}
Genre: {$data["Genres"]}
IMDB Link: {$data["URL"]}
EOT;
    $years = 0;
    // Advance the cursor to at least the $earlyBounds date without creating events.
    while ($dateCursor < $earlyBounds) {
        // This is the number of years to advance the cursor.
        $years = $years + 25;
        $dateCursor = $dateCursor->modify('+25 years');
    }
    // Now that we're in bounds, create all day events and do so every anniversary.
    while ($dateCursor < $lateBounds) {
        // Handle the case when the premire occurs after earlyBounds (this will not happen as configured in this gist)
        $summary = $years === 0 ? 'Premire' : "${years}th Anniversary";
        $calendar->addComponent(
            createAllDayEvent($dateCursor, "${data['Title']} - ${summary}", $eventDescription)
        );
        // This is the number of years to advance the cursor.
        $years = $years + 25;
        $dateCursor = $dateCursor->modify('+25 years');
    }
}

// Technically the IETF specification says that UTF8 is ok,
// but google calendar imports .ics files using either ISO 8859-1 (Latin1) or Windows-1252
// and some multibyte UTF8 characters get mangled in the import.
echo utf8_decode($calendar->render());