php课程---初学练习 

<!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>无标题文档</title>
</head>

<body>
<?pHp
$hello = "你好";
$test = "hello";
echo $$test;

$s="hello";
$str=&$s;
$str = "world";
echo $s; 
  
  /*
  强类型语言：
  1.整型：int
  2.浮点型:float,double,decmial
  3.字符类型：char
  4.字符串类型：string
  5.日期时间类型：datetime
  6.bool型
  7.object型
  
  int a =5;
  string s="";
  
  弱类型语言：
  var a =5;
  */
?>
</body>
</html>

 

posted @ 2016-02-21 08:52  秦萧不再  阅读(150)  评论(0)    收藏  举报