View difference between Paste ID: e4nk6cfT and vAuXUcg0

 <!DOCTYPE html>
-    N:<input type="text" name="num1">
+<html lang="en">
-    M:<input type="text" name="num2">
+<head>
     <meta charset="UTF-8">
-<?php
+    <title>First Steps Into PHP</title>
-$num1 = 0;
+
-$num2 = 0;
+</head>
-if(isset($_GET["num1"], $_GET["num2"])) {
+<body>
-    $num1 = intval($_GET["num1"]);
+
-    $num2 = intval($_GET["num2"]);
+    N: <input type="text" name="num1"/>
-}
+    M: <input type="text" name="num2"/>
-for($list=1;$list<=$num1;$list++) {
+    <input type="submit"/>
-    echo "<ul><li>List $list<ul>";
+
-    for($el=1;$el<=$num2;$el++) {
+<ul>
-        echo "<li>Element $list.$el</li>";
+    <?php
     if (isset($_GET['num1'])
-    echo "</ul></li></ul>";
+        && isset($_GET['num2'])) {
-}
+        $num1 = intval($_GET['num1']);
         $num2 = intval($_GET['num2']);
 
         for ($i = 1; $i <= $num1; $i++) {
             echo "<li> List $i";
             echo "<ul>";
             for ($j = 1; $j <= $num2; $j++) {
                 echo "<li> Element $i.$j";
                 echo "</li>";
             }
             echo "</ul>";
             echo "</li>";
         }
     }
     ?>
 </ul>
 </body>
 </html>