<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>無標題文檔</title>
</head>
<body>
<?php
$change_name="Look";
$Look=",here comes spring!";
$Look1=",have a nice day!";
echo $change_name;
$change_name="Look1";
echo $$change_name;
?>
</body>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>無標題文檔</title>
</head>
<body>
<?php
$change_name="Look";
$Look=",here comes spring!";
$Look1=",have a nice day!";
echo $change_name;
$change_name="Look1";
echo $$change_name;
?>
</body>
</html>
就是和指針很像的，不，是一樣的！
