php这有什么问题吗?奶奶地用不了!!!
<!DOCTYPE HTML PUBLIC
"-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/tr/html4/loose.dtd">
<html>
<head>
<title>php
</title>
</head>
<body>
<?php if(!empty($_POST['name'])) {
echo 'greetings,{$_POST['name']},and welcome.";
} ?>
<form action="<?php$PHP_SELF;?>"method="post">
you name :input type="text" name="name"
</form>
</body>
</html>