- var_dump: documentation ( source)
- fputcsv: documentation ( source)
- fopen: documentation ( source)
<?php
$output = fopen('php://output', 'w');
fputcsv($output, ['a:3:{s:4:"type";i:3;s:8:"platform";s:10:"flirchi.ru";s:13:"channel_login";s:10:"flirchi.ru";}']);
var_dump($output);