xeoncross

<?php

// Ignore errors
libxml_use_internal_errors(true) AND libxml_clear_errors();

// http://stackoverflow.com/q/10237238/99923
// http://stackoverflow.com/q/12034235/99923
// http://stackoverflow.com/q/8218230/99923

// original input (unknown encoding)

oliworx

ob_start(); // collect all outputs in a buffer
 /*
 put the normal PHP-Code here
 if the resulting html code ($sContent) is the same, and so the md5 hash is the same,
 it will not be sent so the client once more
 because the client already has this html page in the cache, identified by the md5 hash Etag
 */
 
$sContent = ob_get_contents(); // collect all outputs in a variable
ob_clean();