PHP HTML No refresh submit form _php Tips

The

usually submits a form for no refreshes, and we do it using AJAX. Some time ago, I followed the boss. Another way of not refreshing a submit form is to use the IFRAME framework. Now put it out and share it with everyone.
First:
HTML page

<! DOCTYPE html>
 
 

PHP Page: form.php

<?php
 //non-null authentication
 if (Empty ($_post[' uname ')) | | empty ($_post[' pwd ']))
 {
  echo ' <script type= ' text/ JavaScript ">alert (" User name or password is blank! "); </script> ';
  Exit;
 }
 
 Verify Password
 if ($_post[' uname ']!= ' Jack ' | | $_post[' pwd ']!= ' 123456 ')
 {
  echo ' <script type= ' text/ JavaScript ">alert (" Incorrect username or password! "); </script> ';
  Exit;
 } else {
  echo ' <script type= "Text/javascript" >alert ("Login succeeded!"); </script> ';
  Exit;
 }

The second type:
HTML page

 <! DOCTYPE html>  
 

The above is the entire content of this article, I hope that you learn PHP programming help.