dongxian8858

2014-03-15 00:20 阅读 121

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注意：未定义的索引：消息错误

I am trying to learn php coding and it's now hitting a snag as I keep getting an error:

Error: Notice: Undefined index: msg in C:\xampp\htdocs\kubebook\index.php on line 12

Source Code:

if ($_GET['msg'] == 1)  {

echo "You have successfully registered.";

}

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doujiu4643 2014-03-15 00:24
You get that message when you attempt to reference an index or variable that isn't defined. In this case, you aren't passing a yourscript.php?msg=123 param to the script, so $_GET['msg'] doesn't exist. First check if it is set before looking at value
```
if (isset($_GET['msg']) && $_GET['msg'] == 1)  {

echo "You have successfully registered.";

}
```
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