最後のエラー<br>
<br />
<b>Warning</b>:  Undefined variable $a in <b>/home/xs659233/xs659233.xsrv.jp/public_html/PHP_test/038.php</b> on line <b>3</b><br />
Array
(
    [type] => 2
    [message] => Undefined variable $a
    [file] => /home/xs659233/xs659233.xsrv.jp/public_html/PHP_test/038.php
    [line] => 3
)