finding the first empty input box

Question

I have many input fields and I need to ascertain the first empty input field. at the moment I'm checking each one individually and if its not empty move on to the next one. But I was wondering if anyone knew of a more efficient way of doing this:

if(empty($a)){$a=$name;}else
if(empty($b)){$b=$name;}else
if(empty($c)){$c=$name;}else 

............if(empty($z)){$z=$name;}else

{$message="all boxes are filled"}; 

Answer 1

好吧，假设您在表单上使用POST或GET ，则可以像这样循环遍历每个表单元素：

foreach ($_GET as $key => $value) { }