A dumb conversion utility for PHP <=> JSON

serialize.php

<form action="serialize.php" method="post">
	<p>JSON:<br>
	<textarea name="json" rows="10" cols="80"><?php

	if (!empty($_POST['php'])) {
		echo json_encode(unserialize($_POST['php']), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
	}

	?></textarea></p>
	<p>Serialized PHP:<br>
	<textarea name="php" rows="10" cols="80"><?php

	if (!empty($_POST['json'])) {
		echo serialize(json_decode($_POST['json'], true));
	}

	?></textarea></p>
	<input type="submit">
</form>