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README.md

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+# seigler/simple-php-buffer
+
+PHP file for basic file-based output buffering
+
+## Usage
+```php
+define('CACHE_PATH', sys_get_temp_dir().'/cache_'); // optional, cache-file location prefix
+define('CACHE_TIME', 5 * 60); // optional, seconds to cache the output
+require 'buffer.php';
+```
+
+This will send last-modified, expires, and etag headers. If a request includes theetag and
+modified-since parameters the script can return a 304 not modified.
+
+This uses output buffering, but it can't buffer headers. If you need to send out a header every time, cached or not, put that header code above the `require`.
+
+```php
+Header('Content-type: image/svg+xml; charset=utf-8');
+Header('Content-Disposition: inline; filename="fancy-chart-' . date('Y-m-d\THisT') . '.svg"');
+require 'buffer.php';
+
+// remaining code to generate the chart
+```
+
+## Credits
+
+* Based on http://www.the-art-of-web.com/php/buffer/
+