abstract：<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title>php中文网</title> </head> <body><h1>欢迎来到php中文网<h1> </body></htm
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>php中文网</title>
</head>
<body>
<h1>欢迎来到php中文网<h1>
</body>
</html>