PHP File Handling: write_csv.php file not adding person to people.php

I have copied the code from the video exactly, yet I am not able to add another person to the people.csv file. I am not getting any errors and when I check the people.csv file as a .txt file, I do not see the person I added. Moreover, when I check the people.php file in the browser, I do not see any of the information of the person I added. I am not sure if this is a permissions issue, but I am working in WorkSpaces, so I do not see how this could be the case. Please advise and thank you very much. Below is my code: <?php

$new_person = [ filter_input(INPUT_POST, 'first', FILTER_SANITIZE_STRING), filter_input(INPUT_POST, 'last', FILTER_SANITIZE_STRING), filter_input(INPUT_POST, 'website', FILTER_SANITIZE_URL), filter_input(INPUT_POST, 'twitter', FILTER_SANITIZE_STRING), filter_input(INPUT_POST, 'img', FILTER_SANITIZE_URL) ];

if (($fh = fopen('../data/csv/people.csv', 'a+' ) ) !== false){ fseek($fh, -1, EEK_END); if (fgets($fh) != PHP_EOL){ fputs($fh, PHP_EOL); } fputcsv($fh, $new_person); fclose($fh); }

header('location:/people.php');