simpleorghtml.php

#!/usr/bin/php

<?php

$text = file_get_contents('php://stdin');

$text = preg_replace('/<\/?div[^>]*\/?>/', '', $text);
$text = preg_replace('/<\/?a[^>]*>/', '', $text);
$text = preg_replace('/<span[^\/]+\/span>/', '', $text);
$text = preg_replace('/ id="[^"]*"/', '', $text);
$text = preg_replace('/ class="[^"]*"/', '', $text);
$text = preg_replace('/<b>/', '<em>', $text);
$text = preg_replace('/<\/b>/', '</em>', $text);
$text = preg_replace('/<i>/', '<strong>', $text);
$text = preg_replace('/<\/i>/', '</strong>', $text);
$text = preg_replace('/\n\n+/', PHP_EOL.PHP_EOL, $text);

echo $text;