rss2insta.php

<?php

/*	RSS2INSTA
	=========

	This scans a folder of images with specially formatted captions, and generates a generic RSS feed. You can then plug this feed into a Zapier workflow and have it send the images (with tags) to Buffer, which will post them to Instagram.
	
	The caption format allows you to specify a plain-language caption as well as whatever hashtags you want to have. The different parts of the caption are delimited by %%, since that seems unlikely to occur in normal text.

	Captions should be formatted as follows: [ID]%%[caption text]%%[image tags].jpg. 
	
	 - ID: a unique identifier (could be a date or image number)
	 - Caption: the caption for the image.
	 - Tags: A space-delimited list of tags. Don't include the # - this will be added automatically.

	 Setup:
	 1. Create a folder for this script on a remote server (needs to be public so a Zapier workflow can find it)
	 2. Add this script. Name it whatever you want.
	 3. In the script, set $public_url to the URL for the folder you just created (the folder, not the script)
	 4. In the folder with the script, create a new folder, called "images".

	 Usage:
	 - Upload images to the images folder
	 - Call this script. It will generate a 'insta_images.xml' file in the main folder.
	 - That's your RSS feed. Share it with whoever!

*/

/*	CONFIG AND TEMPLATES */

$public_url = "https://csilverman.com/YOUR_URL_HERE/";

$rss_header = <<<EOT
<?xml version="1.0" ?>
<rss version="2.0">
<channel>
	<title>Instagram</title>
	<link>https://www.csilverman.com/</link>
	<description>Instagram posts</description>
EOT;

$rss_footer = <<<EOT
</channel>
</rss>
EOT;


/*	FUNCTIONS */

function format_caption($caption) {
	
	//	First, remove the file extension.
	$caption = str_ireplace('.jpg', '', $caption);
	$caption = str_ireplace('.png', '', $caption);
	
	//	I'm using %% as a delimiter, since periods could be used in a caption
	$caption = explode('%%', $caption);
	
	//	The first part of the caption is just the ID. We'll ignore that.
	//	The second part is the main caption. We need that.
	
	$caption_text = $caption[1];
	
	//	The third part of the caption is the tags. 
	$caption_tags = $caption[2];
	$caption_tags = explode(' ', $caption_tags);
	
	foreach ($caption_tags as &$tag) {
		$final_tags .= ' #'.$tag;
	}

	$final_caption = $caption_text.'\n\n'.$final_tags;
	
	return $final_caption;
}


/*	ACTION */

//	Scan the images folder
$dir = getcwd()."/images";
$scanned_directory = array_diff(scandir($dir), array('..', '.'));

//	For each file in the images directory, grab the filename
//	and construct the info we need.
foreach ($scanned_directory as &$value) {
	$guid = $value;
	$img_url = $public_url.'images/'.$value;
	$caption = format_caption($value);

$rss_item = <<<EOT
<item>
	<title>$guid</title>
	<link></link>
	<description>$caption</description>
	<guid>$guid</guid>
	<image>
		<url>$img_url</url>
	</image>
</item>
EOT;

	$all_items .= $rss_item;
}

$ig_final_rss = $rss_header.$all_items.$rss_footer;	

file_put_contents(getcwd()."/insta_images.xml", $ig_final_rss);


?>