php9个超全局变量的用法详解（二）
今天来讲一下$_GET()与$_POST()。
其实很容易理解，根据表面意思就可以看得出来，是获得post与get表单的数据，其实也正是如此，来点专业的话来讲，
$_GET 变量是一个数组，内容是由 HTTP GET 方法发送的变量名称和值。
$_GET 变量用于收集来自 method="get" 的表单中的值。从带有 GET 方法的表单发送的信息，对任何人都是可见的（会显示在浏览器的地址栏），并且对发送的信息量也有限制（最多 100 个字符）。好，看个例子，上简单登录界面的代码：
<html> <center> </center> </html>
它会提交到get.php这个页面，再看一下它的代码:
Welcome <?php echo $_GET["name"]; ?>.<br /> You password is <?php echo $_GET["pwd"]; ?>
通过$_GET["name"]就可以取到表单里明为name的值。效果如下。$_GET()效果.
$_POST与$_GET()本质上没什么区别，只是get鱼post的区别，在这里我不在细说，代码和get的一样，index页面只是将method的get改为post,接受页面改为$_POST['name'].$_POST效果.
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