Laravel.io
<?php
	# /public/testForm.php
	# Small test form to simulate data posting from legacy app.
?>

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Test Legacy Form</title>
</head>
<body>
	<form action="legacyPostTest" method="post">
		<input name="varPost" type="hidden" value="waaaaaaat!!!">
		<input type="submit" value="Submit">
	</form>
</body>
</html>

Please note that all pasted data is publicly available.