<?php
echo 'Форма успешно отпарвлена!';
$user_name = $_POST['user_name'];
$user_phone = $_POST['user_phone'];
$user_address = $_POST['user_address'];
file_put_contents('/home/misha/html/**********.txt' .$user_name.';'.$user_phone.';'.$user_address. PHP_EOL, FILE_APPEND);
?>
file_put_contents("/home/misha/html/{$user_phone}.txt", "{$user_name};{$user_phone};{$user_address}" . PHP_EOL, FILE_APPEND);