<?php
// your code goes here
// ①
$samural_alert = "こちらは侍エンジニアでございます。";
// ②
$alert = "<script type='text/javascript'>alert('". $samural_alert. "');</script>";
// ③
echo $alert;
PD9waHAKCi8vIHlvdXIgY29kZSBnb2VzIGhlcmUKCgovLyDikaAKJHNhbXVyYWxfYWxlcnQgPSAi44GT44Gh44KJ44Gv5L6N44Ko44Oz44K444OL44Ki44Gn44GU44GW44GE44G+44GZ44CCIjsKLy8g4pGhCiRhbGVydCA9ICI8c2NyaXB0IHR5cGU9J3RleHQvamF2YXNjcmlwdCc+YWxlcnQoJyIuICRzYW11cmFsX2FsZXJ0LiAiJyk7PC9zY3JpcHQ+IjsKLy8g4pGiCmVjaG8gJGFsZXJ0Owo=