PHP学习日记(1)-PHP快速入门
1.1通过FORM表单提交数据
index.html
通过表单会跳转至test.php页面,并且会通过post方式把表单数据一起传过去。
test.php
$username=$_POST['username'];
echo $username;
?>
$_POST是超级全局变量,通过POST方法传递给该脚本的变量数组。
其他超级全局变量:
$GLBALS 所有全局变量数组
$_GET 通过GET方法传递给该脚本的变量数组
$_COOKIE cookie变量数组
$_FILES 与文件上传相关的变量数组
$_ENV 环境变量数组
$_REQUEST 所有用户输入的变量数组
$_SESSIOIN 会话变量数组
1.2 可变变量
$a="b";
$b="zzz";
echo $$a; //相当于$b

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