看PHP100的视频教程中的留言板部分,里面有句是这么写的:if($_POST['submit'])
{
$sql = "insert into msg (id, userid, contant, oppeardata) values ('', '999', '$_POST[contant]', Now())";
print $sql;
$sql_return = mysql_query($sql);
if(!$sql_return)
{
print("发表留言错误").mysql_error();
exit();
}
print("发表留言成功</br>");
问题是:$_POST['submit']会出错:Notice: Undefined index: submit in /var/ftp/htdocs/index.php on line 47
submit 是表单按钮的name
$_POST[submit]的错误提示 Notice: Use of undefined constant submit - assumed 'submit' in /var/ftp/htdocs/index.php on line 47初学,不太明白为啥,和教程里的也对比了,一样的吖。
{
$sql = "insert into msg (id, userid, contant, oppeardata) values ('', '999', '$_POST[contant]', Now())";
print $sql;
$sql_return = mysql_query($sql);
if(!$sql_return)
{
print("发表留言错误").mysql_error();
exit();
}
print("发表留言成功</br>");
问题是:$_POST['submit']会出错:Notice: Undefined index: submit in /var/ftp/htdocs/index.php on line 47
submit 是表单按钮的name
$_POST[submit]的错误提示 Notice: Use of undefined constant submit - assumed 'submit' in /var/ftp/htdocs/index.php on line 47初学,不太明白为啥,和教程里的也对比了,一样的吖。
$_POST[contant] 是要用$_POST['contant'] 要加引号的