cadars/portable-feed.php

## portable-feed.php
<?php

/* Generate a basic RSS feed (post titles only) for https://github.com/cadars/portable.php
- Add <link rel="alternate" type="application/rss+xml" href="feed.xml"> to the <head> of portable.php
- `bash portable.sh` to generate both index.html and feed.xml */

$site_title = 'This is the website title';
$site_desc = 'This is the website description';
$site_url = 'http://example.com';

function create_slug($string){
  $string = strtolower($string);
  $string = strip_tags($string);
  $string = stripslashes($string);
  $string = html_entity_decode($string);
  $string = str_replace('\'', '', $string);
  $string = trim(preg_replace('/[^a-z0-9]+/', '-', $string), '-');
  return $string;
}

$files = [];
foreach (new DirectoryIterator(__DIR__.'/content/') as $file) {
  if ( $file->getType() == 'file' && strpos($file->getFilename(),'.md') ) {
    $files[] = $file->getFilename();
  }
}
rsort($files);

$items = '';
foreach ($files as $file) {

  $filename_no_ext = substr($file, 0, strrpos($file, "."));
  $date = date("r", strtotime($filename_no_ext));
  $file_path = __DIR__.'/content/'.$file;
  $file = fopen($file_path, 'r');
  $post_title = trim(fgets($file),'#');
  $post_slug = create_slug($filename_no_ext.$post_title);
  fclose($file);

  $items .= '<item>
    <title>'.$post_title.'</title>
    <pubDate>'.$date.'</pubDate>
    <link>'.$site_url.'/#'.$post_slug.'</link>
    <guid>'.$site_url.'/#'.$post_slug.'</guid>
    <description></description>
    </item>';
}
?>
<?php echo '<?xml version="1.0" encoding="UTF-8"?>'; ?>

<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
  <channel>
    <title><?php echo $site_title; ?></title>
    <description><?php echo $site_desc; ?></description>
    <language>en-us</language>
    <link><?php echo $site_url; ?></link>
    <atom:link href="<?php echo $site_url; ?>/feed.xml" rel="self" type="application/rss+xml" />
    <?php echo $items; ?>

  </channel>
</rss>

## portable.sh
php portable.php > index.html
php portable-feed.php > feed.xml
	<?php

	/* Generate a basic RSS feed (post titles only) for https://github.com/cadars/portable.php
	- Add <link rel="alternate" type="application/rss+xml" href="feed.xml"> to the <head> of portable.php
	- `bash portable.sh` to generate both index.html and feed.xml */

	$site_title = 'This is the website title';
	$site_desc = 'This is the website description';
	$site_url = 'http://example.com';

	function create_slug($string){
	$string = strtolower($string);
	$string = strip_tags($string);
	$string = stripslashes($string);
	$string = html_entity_decode($string);
	$string = str_replace('\'', '', $string);
	$string = trim(preg_replace('/[^a-z0-9]+/', '-', $string), '-');
	return $string;
	}

	$files = [];
	foreach (new DirectoryIterator(__DIR__.'/content/') as $file) {
	if ( $file->getType() == 'file' && strpos($file->getFilename(),'.md') ) {
	$files[] = $file->getFilename();
	}
	}
	rsort($files);

	$items = '';
	foreach ($files as $file) {

	$filename_no_ext = substr($file, 0, strrpos($file, "."));
	$date = date("r", strtotime($filename_no_ext));
	$file_path = __DIR__.'/content/'.$file;
	$file = fopen($file_path, 'r');
	$post_title = trim(fgets($file),'#');
	$post_slug = create_slug($filename_no_ext.$post_title);
	fclose($file);

	$items .= '<item>
	<title>'.$post_title.'</title>
	<pubDate>'.$date.'</pubDate>
	<link>'.$site_url.'/#'.$post_slug.'</link>
	<guid>'.$site_url.'/#'.$post_slug.'</guid>
	<description></description>
	</item>';
	}
	?>
	<?php echo '<?xml version="1.0" encoding="UTF-8"?>'; ?>

	<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
	<channel>
	<title><?php echo $site_title; ?></title>
	<description><?php echo $site_desc; ?></description>
	<language>en-us</language>
	<link><?php echo $site_url; ?></link>
	<atom:link href="<?php echo $site_url; ?>/feed.xml" rel="self" type="application/rss+xml" />
	<?php echo $items; ?>

	</channel>
	</rss>
	php portable.php > index.html
	php portable-feed.php > feed.xml