xsssk sources snippet

index.php

<?php
function index()
{
	echo ascii('xsssk');
}

function rick()
{
	header('Location: https://media.giphy.com/media/Vuw9m5wXviFIQ/giphy.gif', true, 301);
}

function inlineJsIsBad()
{
	header('Content-Type: application/javascript');
	echo 'alert("💩 JavaScript is bad, m\'kay?");';
}

function iCanHasHtml()
{
	return (!isset($_SERVER['HTTP_ACCEPT']) || strpos($_SERVER['HTTP_ACCEPT'], 'text/html') !== false);
}

function iCanHasPikshur()
{
	return (strpos($_SERVER['HTTP_ACCEPT'], 'image/*') !== false);
}

function iCanHasJavaScript()
{
	return (strpos($_SERVER['HTTP_ACCEPT'], '*/*') !== false);
}

// ---

if (iCanHasHtml()) {
	index();
	exit;
}

if (iCanHasPikshur()) {
	rick();
	exit;
}

if (iCanHasJavaScript()) {
	inlineJsIsBad();
	exit;
}